1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define elf_info_to_howto ppc64_elf_info_to_howto
66 #define elf_backend_want_got_sym 0
67 #define elf_backend_want_plt_sym 0
68 #define elf_backend_plt_alignment 3
69 #define elf_backend_plt_not_loaded 1
70 #define elf_backend_got_symbol_offset 0
71 #define elf_backend_got_header_size 8
72 #define elf_backend_can_gc_sections 1
73 #define elf_backend_can_refcount 1
74 #define elf_backend_rela_normal 1
76 #define bfd_elf64_mkobject ppc64_elf_mkobject
77 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
78 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
79 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
80 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
81 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
82 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
84 #define elf_backend_object_p ppc64_elf_object_p
85 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
86 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
87 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
88 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
89 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
90 #define elf_backend_check_directives ppc64_elf_check_directives
91 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
92 #define elf_backend_check_relocs ppc64_elf_check_relocs
93 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
94 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
95 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
96 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
97 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
98 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
99 #define elf_backend_relocate_section ppc64_elf_relocate_section
100 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
101 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
102 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
103 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
104 #define elf_backend_special_sections ppc64_elf_special_sections
106 /* The name of the dynamic interpreter. This is put in the .interp
108 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
110 /* The size in bytes of an entry in the procedure linkage table. */
111 #define PLT_ENTRY_SIZE 24
113 /* The initial size of the plt reserved for the dynamic linker. */
114 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
116 /* TOC base pointers offset from start of TOC. */
117 #define TOC_BASE_OFF 0x8000
119 /* Offset of tp and dtp pointers from start of TLS block. */
120 #define TP_OFFSET 0x7000
121 #define DTP_OFFSET 0x8000
123 /* .plt call stub instructions. The normal stub is like this, but
124 sometimes the .plt entry crosses a 64k boundary and we need to
125 insert an addis to adjust r12. */
126 #define PLT_CALL_STUB_SIZE (7*4)
127 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
128 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
129 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
130 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
131 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
132 /* ld %r11,xxx+16@l(%r12) */
133 #define BCTR 0x4e800420 /* bctr */
136 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
137 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
139 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
141 /* glink call stub instructions. We enter with the index in R0, and the
142 address of glink entry in CTR. From that, we can calculate PLT0. */
143 #define GLINK_CALL_STUB_SIZE (16*4)
144 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
145 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
146 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
147 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
148 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
149 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
150 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
151 /* sub %r12,%r12,%r11 */
152 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
153 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
154 /* ld %r11,xxx@l(%r12) */
155 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
158 /* ld %r11,16(%r12) */
162 #define NOP 0x60000000
164 /* Some other nops. */
165 #define CROR_151515 0x4def7b82
166 #define CROR_313131 0x4ffffb82
168 /* .glink entries for the first 32k functions are two instructions. */
169 #define LI_R0_0 0x38000000 /* li %r0,0 */
170 #define B_DOT 0x48000000 /* b . */
172 /* After that, we need two instructions to load the index, followed by
174 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
175 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
177 /* Instructions used by the save and restore reg functions. */
178 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
179 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
180 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
181 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
182 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
183 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
184 #define LI_R12_0 0x39800000 /* li %r12,0 */
185 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
186 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
187 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
188 #define BLR 0x4e800020 /* blr */
190 /* Since .opd is an array of descriptors and each entry will end up
191 with identical R_PPC64_RELATIVE relocs, there is really no need to
192 propagate .opd relocs; The dynamic linker should be taught to
193 relocate .opd without reloc entries. */
194 #ifndef NO_OPD_RELOCS
195 #define NO_OPD_RELOCS 0
198 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
200 /* Relocation HOWTO's. */
201 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
203 static reloc_howto_type ppc64_elf_howto_raw[] = {
204 /* This reloc does nothing. */
205 HOWTO (R_PPC64_NONE, /* type */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
209 FALSE, /* pc_relative */
211 complain_overflow_dont, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC64_NONE", /* name */
214 FALSE, /* partial_inplace */
217 FALSE), /* pcrel_offset */
219 /* A standard 32 bit relocation. */
220 HOWTO (R_PPC64_ADDR32, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 FALSE, /* pc_relative */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC64_ADDR32", /* name */
229 FALSE, /* partial_inplace */
231 0xffffffff, /* dst_mask */
232 FALSE), /* pcrel_offset */
234 /* An absolute 26 bit branch; the lower two bits must be zero.
235 FIXME: we don't check that, we just clear them. */
236 HOWTO (R_PPC64_ADDR24, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE, /* pc_relative */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR24", /* name */
245 FALSE, /* partial_inplace */
247 0x03fffffc, /* dst_mask */
248 FALSE), /* pcrel_offset */
250 /* A standard 16 bit relocation. */
251 HOWTO (R_PPC64_ADDR16, /* type */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
255 FALSE, /* pc_relative */
257 complain_overflow_bitfield, /* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC64_ADDR16", /* name */
260 FALSE, /* partial_inplace */
262 0xffff, /* dst_mask */
263 FALSE), /* pcrel_offset */
265 /* A 16 bit relocation without overflow. */
266 HOWTO (R_PPC64_ADDR16_LO, /* type */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE, /* pc_relative */
272 complain_overflow_dont,/* complain_on_overflow */
273 bfd_elf_generic_reloc, /* special_function */
274 "R_PPC64_ADDR16_LO", /* name */
275 FALSE, /* partial_inplace */
277 0xffff, /* dst_mask */
278 FALSE), /* pcrel_offset */
280 /* Bits 16-31 of an address. */
281 HOWTO (R_PPC64_ADDR16_HI, /* type */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE, /* pc_relative */
287 complain_overflow_dont, /* complain_on_overflow */
288 bfd_elf_generic_reloc, /* special_function */
289 "R_PPC64_ADDR16_HI", /* name */
290 FALSE, /* partial_inplace */
292 0xffff, /* dst_mask */
293 FALSE), /* pcrel_offset */
295 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
296 bits, treated as a signed number, is negative. */
297 HOWTO (R_PPC64_ADDR16_HA, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE, /* pc_relative */
303 complain_overflow_dont, /* complain_on_overflow */
304 ppc64_elf_ha_reloc, /* special_function */
305 "R_PPC64_ADDR16_HA", /* name */
306 FALSE, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE), /* pcrel_offset */
311 /* An absolute 16 bit branch; the lower two bits must be zero.
312 FIXME: we don't check that, we just clear them. */
313 HOWTO (R_PPC64_ADDR14, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 ppc64_elf_branch_reloc, /* special_function */
321 "R_PPC64_ADDR14", /* name */
322 FALSE, /* partial_inplace */
324 0x0000fffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is expected to be taken. The lower two
329 bits must be zero. */
330 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_bitfield, /* complain_on_overflow */
337 ppc64_elf_brtaken_reloc, /* special_function */
338 "R_PPC64_ADDR14_BRTAKEN",/* name */
339 FALSE, /* partial_inplace */
341 0x0000fffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is not expected to be taken. The lower
346 two bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE, /* pc_relative */
353 complain_overflow_bitfield, /* complain_on_overflow */
354 ppc64_elf_brtaken_reloc, /* special_function */
355 "R_PPC64_ADDR14_BRNTAKEN",/* name */
356 FALSE, /* partial_inplace */
358 0x0000fffc, /* dst_mask */
359 FALSE), /* pcrel_offset */
361 /* A relative 26 bit branch; the lower two bits must be zero. */
362 HOWTO (R_PPC64_REL24, /* type */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
366 TRUE, /* pc_relative */
368 complain_overflow_signed, /* complain_on_overflow */
369 ppc64_elf_branch_reloc, /* special_function */
370 "R_PPC64_REL24", /* name */
371 FALSE, /* partial_inplace */
373 0x03fffffc, /* dst_mask */
374 TRUE), /* pcrel_offset */
376 /* A relative 16 bit branch; the lower two bits must be zero. */
377 HOWTO (R_PPC64_REL14, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 ppc64_elf_branch_reloc, /* special_function */
385 "R_PPC64_REL14", /* name */
386 FALSE, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is expected to be taken. The lower two bits must be
394 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc, /* special_function */
402 "R_PPC64_REL14_BRTAKEN", /* name */
403 FALSE, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is not expected to be taken. The lower two bits must
411 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 TRUE, /* pc_relative */
417 complain_overflow_signed, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc, /* special_function */
419 "R_PPC64_REL14_BRNTAKEN",/* name */
420 FALSE, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 TRUE), /* pcrel_offset */
425 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
427 HOWTO (R_PPC64_GOT16, /* type */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
431 FALSE, /* pc_relative */
433 complain_overflow_signed, /* complain_on_overflow */
434 ppc64_elf_unhandled_reloc, /* special_function */
435 "R_PPC64_GOT16", /* name */
436 FALSE, /* partial_inplace */
438 0xffff, /* dst_mask */
439 FALSE), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
443 HOWTO (R_PPC64_GOT16_LO, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE, /* pc_relative */
449 complain_overflow_dont, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc, /* special_function */
451 "R_PPC64_GOT16_LO", /* name */
452 FALSE, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_HI, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE, /* pc_relative */
465 complain_overflow_dont,/* complain_on_overflow */
466 ppc64_elf_unhandled_reloc, /* special_function */
467 "R_PPC64_GOT16_HI", /* name */
468 FALSE, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HA, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE, /* pc_relative */
481 complain_overflow_dont,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc, /* special_function */
483 "R_PPC64_GOT16_HA", /* name */
484 FALSE, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE), /* pcrel_offset */
489 /* This is used only by the dynamic linker. The symbol should exist
490 both in the object being run and in some shared library. The
491 dynamic linker copies the data addressed by the symbol from the
492 shared library into the object, because the object being
493 run has to have the data at some particular address. */
494 HOWTO (R_PPC64_COPY, /* type */
496 0, /* this one is variable size */
498 FALSE, /* pc_relative */
500 complain_overflow_dont, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc, /* special_function */
502 "R_PPC64_COPY", /* name */
503 FALSE, /* partial_inplace */
506 FALSE), /* pcrel_offset */
508 /* Like R_PPC64_ADDR64, but used when setting global offset table
510 HOWTO (R_PPC64_GLOB_DAT, /* type */
512 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
514 FALSE, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
518 "R_PPC64_GLOB_DAT", /* name */
519 FALSE, /* partial_inplace */
521 ONES (64), /* dst_mask */
522 FALSE), /* pcrel_offset */
524 /* Created by the link editor. Marks a procedure linkage table
525 entry for a symbol. */
526 HOWTO (R_PPC64_JMP_SLOT, /* type */
528 0, /* size (0 = byte, 1 = short, 2 = long) */
530 FALSE, /* pc_relative */
532 complain_overflow_dont, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc, /* special_function */
534 "R_PPC64_JMP_SLOT", /* name */
535 FALSE, /* partial_inplace */
538 FALSE), /* pcrel_offset */
540 /* Used only by the dynamic linker. When the object is run, this
541 doubleword64 is set to the load address of the object, plus the
543 HOWTO (R_PPC64_RELATIVE, /* type */
545 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
547 FALSE, /* pc_relative */
549 complain_overflow_dont, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_PPC64_RELATIVE", /* name */
552 FALSE, /* partial_inplace */
554 ONES (64), /* dst_mask */
555 FALSE), /* pcrel_offset */
557 /* Like R_PPC64_ADDR32, but may be unaligned. */
558 HOWTO (R_PPC64_UADDR32, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 FALSE, /* pc_relative */
564 complain_overflow_bitfield, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC64_UADDR32", /* name */
567 FALSE, /* partial_inplace */
569 0xffffffff, /* dst_mask */
570 FALSE), /* pcrel_offset */
572 /* Like R_PPC64_ADDR16, but may be unaligned. */
573 HOWTO (R_PPC64_UADDR16, /* type */
575 1, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_bitfield, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC64_UADDR16", /* name */
582 FALSE, /* partial_inplace */
584 0xffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 /* 32-bit PC relative. */
588 HOWTO (R_PPC64_REL32, /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 TRUE, /* pc_relative */
594 /* FIXME: Verify. Was complain_overflow_bitfield. */
595 complain_overflow_signed, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_REL32", /* name */
598 FALSE, /* partial_inplace */
600 0xffffffff, /* dst_mask */
601 TRUE), /* pcrel_offset */
603 /* 32-bit relocation to the symbol's procedure linkage table. */
604 HOWTO (R_PPC64_PLT32, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE, /* pc_relative */
610 complain_overflow_bitfield, /* complain_on_overflow */
611 ppc64_elf_unhandled_reloc, /* special_function */
612 "R_PPC64_PLT32", /* name */
613 FALSE, /* partial_inplace */
615 0xffffffff, /* dst_mask */
616 FALSE), /* pcrel_offset */
618 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
619 FIXME: R_PPC64_PLTREL32 not supported. */
620 HOWTO (R_PPC64_PLTREL32, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 TRUE, /* pc_relative */
626 complain_overflow_signed, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_PPC64_PLTREL32", /* name */
629 FALSE, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 TRUE), /* pcrel_offset */
634 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
636 HOWTO (R_PPC64_PLT16_LO, /* type */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE, /* pc_relative */
642 complain_overflow_dont, /* complain_on_overflow */
643 ppc64_elf_unhandled_reloc, /* special_function */
644 "R_PPC64_PLT16_LO", /* name */
645 FALSE, /* partial_inplace */
647 0xffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_HI, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE, /* pc_relative */
658 complain_overflow_dont, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc, /* special_function */
660 "R_PPC64_PLT16_HI", /* name */
661 FALSE, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HA, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE, /* pc_relative */
674 complain_overflow_dont, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc, /* special_function */
676 "R_PPC64_PLT16_HA", /* name */
677 FALSE, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
682 /* 16-bit section relative relocation. */
683 HOWTO (R_PPC64_SECTOFF, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_bitfield, /* complain_on_overflow */
690 ppc64_elf_sectoff_reloc, /* special_function */
691 "R_PPC64_SECTOFF", /* name */
692 FALSE, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* Like R_PPC64_SECTOFF, but no overflow warning. */
698 HOWTO (R_PPC64_SECTOFF_LO, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE, /* pc_relative */
704 complain_overflow_dont, /* complain_on_overflow */
705 ppc64_elf_sectoff_reloc, /* special_function */
706 "R_PPC64_SECTOFF_LO", /* name */
707 FALSE, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
712 /* 16-bit upper half section relative relocation. */
713 HOWTO (R_PPC64_SECTOFF_HI, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE, /* pc_relative */
719 complain_overflow_dont, /* complain_on_overflow */
720 ppc64_elf_sectoff_reloc, /* special_function */
721 "R_PPC64_SECTOFF_HI", /* name */
722 FALSE, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
727 /* 16-bit upper half adjusted section relative relocation. */
728 HOWTO (R_PPC64_SECTOFF_HA, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE, /* pc_relative */
734 complain_overflow_dont, /* complain_on_overflow */
735 ppc64_elf_sectoff_ha_reloc, /* special_function */
736 "R_PPC64_SECTOFF_HA", /* name */
737 FALSE, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
742 /* Like R_PPC64_REL24 without touching the two least significant bits. */
743 HOWTO (R_PPC64_REL30, /* type */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
747 TRUE, /* pc_relative */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_PPC64_REL30", /* name */
752 FALSE, /* partial_inplace */
754 0xfffffffc, /* dst_mask */
755 TRUE), /* pcrel_offset */
757 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
759 /* A standard 64-bit relocation. */
760 HOWTO (R_PPC64_ADDR64, /* type */
762 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
764 FALSE, /* pc_relative */
766 complain_overflow_dont, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_PPC64_ADDR64", /* name */
769 FALSE, /* partial_inplace */
771 ONES (64), /* dst_mask */
772 FALSE), /* pcrel_offset */
774 /* The bits 32-47 of an address. */
775 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE, /* pc_relative */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 "R_PPC64_ADDR16_HIGHER", /* name */
784 FALSE, /* partial_inplace */
786 0xffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
789 /* The bits 32-47 of an address, plus 1 if the contents of the low
790 16 bits, treated as a signed number, is negative. */
791 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 ppc64_elf_ha_reloc, /* special_function */
799 "R_PPC64_ADDR16_HIGHERA", /* name */
800 FALSE, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* The bits 48-63 of an address. */
806 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_ADDR16_HIGHEST", /* name */
815 FALSE, /* partial_inplace */
817 0xffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
820 /* The bits 48-63 of an address, plus 1 if the contents of the low
821 16 bits, treated as a signed number, is negative. */
822 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE, /* pc_relative */
828 complain_overflow_dont, /* complain_on_overflow */
829 ppc64_elf_ha_reloc, /* special_function */
830 "R_PPC64_ADDR16_HIGHESTA", /* name */
831 FALSE, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
836 /* Like ADDR64, but may be unaligned. */
837 HOWTO (R_PPC64_UADDR64, /* type */
839 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
841 FALSE, /* pc_relative */
843 complain_overflow_dont, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_PPC64_UADDR64", /* name */
846 FALSE, /* partial_inplace */
848 ONES (64), /* dst_mask */
849 FALSE), /* pcrel_offset */
851 /* 64-bit relative relocation. */
852 HOWTO (R_PPC64_REL64, /* type */
854 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 TRUE, /* pc_relative */
858 complain_overflow_dont, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
860 "R_PPC64_REL64", /* name */
861 FALSE, /* partial_inplace */
863 ONES (64), /* dst_mask */
864 TRUE), /* pcrel_offset */
866 /* 64-bit relocation to the symbol's procedure linkage table. */
867 HOWTO (R_PPC64_PLT64, /* type */
869 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
871 FALSE, /* pc_relative */
873 complain_overflow_dont, /* complain_on_overflow */
874 ppc64_elf_unhandled_reloc, /* special_function */
875 "R_PPC64_PLT64", /* name */
876 FALSE, /* partial_inplace */
878 ONES (64), /* dst_mask */
879 FALSE), /* pcrel_offset */
881 /* 64-bit PC relative relocation to the symbol's procedure linkage
883 /* FIXME: R_PPC64_PLTREL64 not supported. */
884 HOWTO (R_PPC64_PLTREL64, /* type */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
888 TRUE, /* pc_relative */
890 complain_overflow_dont, /* complain_on_overflow */
891 ppc64_elf_unhandled_reloc, /* special_function */
892 "R_PPC64_PLTREL64", /* name */
893 FALSE, /* partial_inplace */
895 ONES (64), /* dst_mask */
896 TRUE), /* pcrel_offset */
898 /* 16 bit TOC-relative relocation. */
900 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
901 HOWTO (R_PPC64_TOC16, /* type */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
905 FALSE, /* pc_relative */
907 complain_overflow_signed, /* complain_on_overflow */
908 ppc64_elf_toc_reloc, /* special_function */
909 "R_PPC64_TOC16", /* name */
910 FALSE, /* partial_inplace */
912 0xffff, /* dst_mask */
913 FALSE), /* pcrel_offset */
915 /* 16 bit TOC-relative relocation without overflow. */
917 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
918 HOWTO (R_PPC64_TOC16_LO, /* type */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE, /* pc_relative */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc64_elf_toc_reloc, /* special_function */
926 "R_PPC64_TOC16_LO", /* name */
927 FALSE, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
932 /* 16 bit TOC-relative relocation, high 16 bits. */
934 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_HI, /* type */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE, /* pc_relative */
941 complain_overflow_dont, /* complain_on_overflow */
942 ppc64_elf_toc_reloc, /* special_function */
943 "R_PPC64_TOC16_HI", /* name */
944 FALSE, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
950 contents of the low 16 bits, treated as a signed number, is
953 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
954 HOWTO (R_PPC64_TOC16_HA, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc64_elf_toc_ha_reloc, /* special_function */
962 "R_PPC64_TOC16_HA", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* 64-bit relocation; insert value of TOC base (.TOC.). */
970 /* R_PPC64_TOC 51 doubleword64 .TOC. */
971 HOWTO (R_PPC64_TOC, /* type */
973 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
975 FALSE, /* pc_relative */
977 complain_overflow_bitfield, /* complain_on_overflow */
978 ppc64_elf_toc64_reloc, /* special_function */
979 "R_PPC64_TOC", /* name */
980 FALSE, /* partial_inplace */
982 ONES (64), /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Like R_PPC64_GOT16, but also informs the link editor that the
986 value to relocate may (!) refer to a PLT entry which the link
987 editor (a) may replace with the symbol value. If the link editor
988 is unable to fully resolve the symbol, it may (b) create a PLT
989 entry and store the address to the new PLT entry in the GOT.
990 This permits lazy resolution of function symbols at run time.
991 The link editor may also skip all of this and just (c) emit a
992 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
993 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
994 HOWTO (R_PPC64_PLTGOT16, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_signed, /* complain_on_overflow */
1001 ppc64_elf_unhandled_reloc, /* special_function */
1002 "R_PPC64_PLTGOT16", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* Like R_PPC64_PLTGOT16, but without overflow. */
1009 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE, /* pc_relative */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16_LO", /* name */
1019 FALSE, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1025 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE, /* pc_relative */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_HI", /* name */
1035 FALSE, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1041 1 if the contents of the low 16 bits, treated as a signed number,
1043 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1044 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 FALSE, /* pc_relative */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 ppc64_elf_unhandled_reloc, /* special_function */
1052 "R_PPC64_PLTGOT16_HA", /* name */
1053 FALSE, /* partial_inplace */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1058 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1059 HOWTO (R_PPC64_ADDR16_DS, /* type */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE, /* pc_relative */
1065 complain_overflow_bitfield, /* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_PPC64_ADDR16_DS", /* name */
1068 FALSE, /* partial_inplace */
1070 0xfffc, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1073 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1074 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE, /* pc_relative */
1080 complain_overflow_dont,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_PPC64_ADDR16_LO_DS",/* name */
1083 FALSE, /* partial_inplace */
1085 0xfffc, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1088 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1089 HOWTO (R_PPC64_GOT16_DS, /* type */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE, /* pc_relative */
1095 complain_overflow_signed, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_GOT16_DS", /* name */
1098 FALSE, /* partial_inplace */
1100 0xfffc, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1103 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1104 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE, /* pc_relative */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc64_elf_unhandled_reloc, /* special_function */
1112 "R_PPC64_GOT16_LO_DS", /* name */
1113 FALSE, /* partial_inplace */
1115 0xfffc, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1118 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1119 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE, /* pc_relative */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 ppc64_elf_unhandled_reloc, /* special_function */
1127 "R_PPC64_PLT16_LO_DS", /* name */
1128 FALSE, /* partial_inplace */
1130 0xfffc, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1133 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1134 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE, /* pc_relative */
1140 complain_overflow_bitfield, /* complain_on_overflow */
1141 ppc64_elf_sectoff_reloc, /* special_function */
1142 "R_PPC64_SECTOFF_DS", /* name */
1143 FALSE, /* partial_inplace */
1145 0xfffc, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1148 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1149 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE, /* pc_relative */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc64_elf_sectoff_reloc, /* special_function */
1157 "R_PPC64_SECTOFF_LO_DS",/* name */
1158 FALSE, /* partial_inplace */
1160 0xfffc, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1163 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1164 HOWTO (R_PPC64_TOC16_DS, /* type */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE, /* pc_relative */
1170 complain_overflow_signed, /* complain_on_overflow */
1171 ppc64_elf_toc_reloc, /* special_function */
1172 "R_PPC64_TOC16_DS", /* name */
1173 FALSE, /* partial_inplace */
1175 0xfffc, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1178 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1179 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE, /* pc_relative */
1185 complain_overflow_dont, /* complain_on_overflow */
1186 ppc64_elf_toc_reloc, /* special_function */
1187 "R_PPC64_TOC16_LO_DS", /* name */
1188 FALSE, /* partial_inplace */
1190 0xfffc, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1193 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE, /* pc_relative */
1201 complain_overflow_signed, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc, /* special_function */
1203 "R_PPC64_PLTGOT16_DS", /* name */
1204 FALSE, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE, /* pc_relative */
1217 complain_overflow_dont, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_LO_DS",/* name */
1220 FALSE, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1225 /* Marker reloc for TLS. */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE, /* pc_relative */
1232 complain_overflow_dont, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC64_TLS", /* name */
1235 FALSE, /* partial_inplace */
1238 FALSE), /* pcrel_offset */
1240 /* Computes the load module index of the load module that contains the
1241 definition of its TLS sym. */
1242 HOWTO (R_PPC64_DTPMOD64,
1244 4, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_unhandled_reloc, /* special_function */
1250 "R_PPC64_DTPMOD64", /* name */
1251 FALSE, /* partial_inplace */
1253 ONES (64), /* dst_mask */
1254 FALSE), /* pcrel_offset */
1256 /* Computes a dtv-relative displacement, the difference between the value
1257 of sym+add and the base address of the thread-local storage block that
1258 contains the definition of sym, minus 0x8000. */
1259 HOWTO (R_PPC64_DTPREL64,
1261 4, /* size (0 = byte, 1 = short, 2 = long) */
1263 FALSE, /* pc_relative */
1265 complain_overflow_dont, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc, /* special_function */
1267 "R_PPC64_DTPREL64", /* name */
1268 FALSE, /* partial_inplace */
1270 ONES (64), /* dst_mask */
1271 FALSE), /* pcrel_offset */
1273 /* A 16 bit dtprel reloc. */
1274 HOWTO (R_PPC64_DTPREL16,
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE, /* pc_relative */
1280 complain_overflow_signed, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_DTPREL16", /* name */
1283 FALSE, /* partial_inplace */
1285 0xffff, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1288 /* Like DTPREL16, but no overflow. */
1289 HOWTO (R_PPC64_DTPREL16_LO,
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE, /* pc_relative */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 ppc64_elf_unhandled_reloc, /* special_function */
1297 "R_PPC64_DTPREL16_LO", /* name */
1298 FALSE, /* partial_inplace */
1300 0xffff, /* dst_mask */
1301 FALSE), /* pcrel_offset */
1303 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1304 HOWTO (R_PPC64_DTPREL16_HI,
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 FALSE, /* pc_relative */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 ppc64_elf_unhandled_reloc, /* special_function */
1312 "R_PPC64_DTPREL16_HI", /* name */
1313 FALSE, /* partial_inplace */
1315 0xffff, /* dst_mask */
1316 FALSE), /* pcrel_offset */
1318 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1319 HOWTO (R_PPC64_DTPREL16_HA,
1320 16, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE, /* pc_relative */
1325 complain_overflow_dont, /* complain_on_overflow */
1326 ppc64_elf_unhandled_reloc, /* special_function */
1327 "R_PPC64_DTPREL16_HA", /* name */
1328 FALSE, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1333 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1334 HOWTO (R_PPC64_DTPREL16_HIGHER,
1335 32, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 FALSE, /* pc_relative */
1340 complain_overflow_dont, /* complain_on_overflow */
1341 ppc64_elf_unhandled_reloc, /* special_function */
1342 "R_PPC64_DTPREL16_HIGHER", /* name */
1343 FALSE, /* partial_inplace */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1348 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1349 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1350 32, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 FALSE, /* pc_relative */
1355 complain_overflow_dont, /* complain_on_overflow */
1356 ppc64_elf_unhandled_reloc, /* special_function */
1357 "R_PPC64_DTPREL16_HIGHERA", /* name */
1358 FALSE, /* partial_inplace */
1360 0xffff, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1363 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1364 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1365 48, /* rightshift */
1366 1, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL16_HIGHEST", /* name */
1373 FALSE, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1379 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1380 48, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_dont, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 /* Like DTPREL16, but for insns with a DS field. */
1394 HOWTO (R_PPC64_DTPREL16_DS,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE, /* pc_relative */
1400 complain_overflow_signed, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_DS", /* name */
1403 FALSE, /* partial_inplace */
1405 0xfffc, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1408 /* Like DTPREL16_DS, but no overflow. */
1409 HOWTO (R_PPC64_DTPREL16_LO_DS,
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE, /* pc_relative */
1415 complain_overflow_dont, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_LO_DS", /* name */
1418 FALSE, /* partial_inplace */
1420 0xfffc, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1423 /* Computes a tp-relative displacement, the difference between the value of
1424 sym+add and the value of the thread pointer (r13). */
1425 HOWTO (R_PPC64_TPREL64,
1427 4, /* size (0 = byte, 1 = short, 2 = long) */
1429 FALSE, /* pc_relative */
1431 complain_overflow_dont, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc, /* special_function */
1433 "R_PPC64_TPREL64", /* name */
1434 FALSE, /* partial_inplace */
1436 ONES (64), /* dst_mask */
1437 FALSE), /* pcrel_offset */
1439 /* A 16 bit tprel reloc. */
1440 HOWTO (R_PPC64_TPREL16,
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 FALSE, /* pc_relative */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc, /* special_function */
1448 "R_PPC64_TPREL16", /* name */
1449 FALSE, /* partial_inplace */
1451 0xffff, /* dst_mask */
1452 FALSE), /* pcrel_offset */
1454 /* Like TPREL16, but no overflow. */
1455 HOWTO (R_PPC64_TPREL16_LO,
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 FALSE, /* pc_relative */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc, /* special_function */
1463 "R_PPC64_TPREL16_LO", /* name */
1464 FALSE, /* partial_inplace */
1466 0xffff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1469 /* Like TPREL16_LO, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_TPREL16_HI,
1471 16, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE, /* pc_relative */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc, /* special_function */
1478 "R_PPC64_TPREL16_HI", /* name */
1479 FALSE, /* partial_inplace */
1481 0xffff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1484 /* Like TPREL16_HI, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_TPREL16_HA,
1486 16, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE, /* pc_relative */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc, /* special_function */
1493 "R_PPC64_TPREL16_HA", /* name */
1494 FALSE, /* partial_inplace */
1496 0xffff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1499 /* Like TPREL16_HI, but next higher group of 16 bits. */
1500 HOWTO (R_PPC64_TPREL16_HIGHER,
1501 32, /* rightshift */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE, /* pc_relative */
1506 complain_overflow_dont, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc, /* special_function */
1508 "R_PPC64_TPREL16_HIGHER", /* name */
1509 FALSE, /* partial_inplace */
1511 0xffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1514 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1515 HOWTO (R_PPC64_TPREL16_HIGHERA,
1516 32, /* rightshift */
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE, /* pc_relative */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc, /* special_function */
1523 "R_PPC64_TPREL16_HIGHERA", /* name */
1524 FALSE, /* partial_inplace */
1526 0xffff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1529 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1530 HOWTO (R_PPC64_TPREL16_HIGHEST,
1531 48, /* rightshift */
1532 1, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE, /* pc_relative */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL16_HIGHEST", /* name */
1539 FALSE, /* partial_inplace */
1541 0xffff, /* dst_mask */
1542 FALSE), /* pcrel_offset */
1544 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1545 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1546 48, /* rightshift */
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_dont, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16_HIGHESTA", /* name */
1554 FALSE, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 /* Like TPREL16, but for insns with a DS field. */
1560 HOWTO (R_PPC64_TPREL16_DS,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE, /* pc_relative */
1566 complain_overflow_signed, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_DS", /* name */
1569 FALSE, /* partial_inplace */
1571 0xfffc, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1574 /* Like TPREL16_DS, but no overflow. */
1575 HOWTO (R_PPC64_TPREL16_LO_DS,
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE, /* pc_relative */
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_LO_DS", /* name */
1584 FALSE, /* partial_inplace */
1586 0xfffc, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1589 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1590 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1591 to the first entry relative to the TOC base (r2). */
1592 HOWTO (R_PPC64_GOT_TLSGD16,
1594 1, /* size (0 = byte, 1 = short, 2 = long) */
1596 FALSE, /* pc_relative */
1598 complain_overflow_signed, /* complain_on_overflow */
1599 ppc64_elf_unhandled_reloc, /* special_function */
1600 "R_PPC64_GOT_TLSGD16", /* name */
1601 FALSE, /* partial_inplace */
1603 0xffff, /* dst_mask */
1604 FALSE), /* pcrel_offset */
1606 /* Like GOT_TLSGD16, but no overflow. */
1607 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1609 1, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE, /* pc_relative */
1613 complain_overflow_dont, /* complain_on_overflow */
1614 ppc64_elf_unhandled_reloc, /* special_function */
1615 "R_PPC64_GOT_TLSGD16_LO", /* name */
1616 FALSE, /* partial_inplace */
1618 0xffff, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1621 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1622 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1623 16, /* rightshift */
1624 1, /* size (0 = byte, 1 = short, 2 = long) */
1626 FALSE, /* pc_relative */
1628 complain_overflow_dont, /* complain_on_overflow */
1629 ppc64_elf_unhandled_reloc, /* special_function */
1630 "R_PPC64_GOT_TLSGD16_HI", /* name */
1631 FALSE, /* partial_inplace */
1633 0xffff, /* dst_mask */
1634 FALSE), /* pcrel_offset */
1636 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1637 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1638 16, /* rightshift */
1639 1, /* size (0 = byte, 1 = short, 2 = long) */
1641 FALSE, /* pc_relative */
1643 complain_overflow_dont, /* complain_on_overflow */
1644 ppc64_elf_unhandled_reloc, /* special_function */
1645 "R_PPC64_GOT_TLSGD16_HA", /* name */
1646 FALSE, /* partial_inplace */
1648 0xffff, /* dst_mask */
1649 FALSE), /* pcrel_offset */
1651 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1652 with values (sym+add)@dtpmod and zero, and computes the offset to the
1653 first entry relative to the TOC base (r2). */
1654 HOWTO (R_PPC64_GOT_TLSLD16,
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 FALSE, /* pc_relative */
1660 complain_overflow_signed, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc, /* special_function */
1662 "R_PPC64_GOT_TLSLD16", /* name */
1663 FALSE, /* partial_inplace */
1665 0xffff, /* dst_mask */
1666 FALSE), /* pcrel_offset */
1668 /* Like GOT_TLSLD16, but no overflow. */
1669 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 FALSE, /* pc_relative */
1675 complain_overflow_dont, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc, /* special_function */
1677 "R_PPC64_GOT_TLSLD16_LO", /* name */
1678 FALSE, /* partial_inplace */
1680 0xffff, /* dst_mask */
1681 FALSE), /* pcrel_offset */
1683 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1684 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1685 16, /* rightshift */
1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 FALSE, /* pc_relative */
1690 complain_overflow_dont, /* complain_on_overflow */
1691 ppc64_elf_unhandled_reloc, /* special_function */
1692 "R_PPC64_GOT_TLSLD16_HI", /* name */
1693 FALSE, /* partial_inplace */
1695 0xffff, /* dst_mask */
1696 FALSE), /* pcrel_offset */
1698 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1699 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1700 16, /* rightshift */
1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1703 FALSE, /* pc_relative */
1705 complain_overflow_dont, /* complain_on_overflow */
1706 ppc64_elf_unhandled_reloc, /* special_function */
1707 "R_PPC64_GOT_TLSLD16_HA", /* name */
1708 FALSE, /* partial_inplace */
1710 0xffff, /* dst_mask */
1711 FALSE), /* pcrel_offset */
1713 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1714 the offset to the entry relative to the TOC base (r2). */
1715 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1717 1, /* size (0 = byte, 1 = short, 2 = long) */
1719 FALSE, /* pc_relative */
1721 complain_overflow_signed, /* complain_on_overflow */
1722 ppc64_elf_unhandled_reloc, /* special_function */
1723 "R_PPC64_GOT_DTPREL16_DS", /* name */
1724 FALSE, /* partial_inplace */
1726 0xfffc, /* dst_mask */
1727 FALSE), /* pcrel_offset */
1729 /* Like GOT_DTPREL16_DS, but no overflow. */
1730 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1732 1, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE, /* pc_relative */
1736 complain_overflow_dont, /* complain_on_overflow */
1737 ppc64_elf_unhandled_reloc, /* special_function */
1738 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1739 FALSE, /* partial_inplace */
1741 0xfffc, /* dst_mask */
1742 FALSE), /* pcrel_offset */
1744 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1745 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1746 16, /* rightshift */
1747 1, /* size (0 = byte, 1 = short, 2 = long) */
1749 FALSE, /* pc_relative */
1751 complain_overflow_dont, /* complain_on_overflow */
1752 ppc64_elf_unhandled_reloc, /* special_function */
1753 "R_PPC64_GOT_DTPREL16_HI", /* name */
1754 FALSE, /* partial_inplace */
1756 0xffff, /* dst_mask */
1757 FALSE), /* pcrel_offset */
1759 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1760 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1761 16, /* rightshift */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE, /* pc_relative */
1766 complain_overflow_dont, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_DTPREL16_HA", /* name */
1769 FALSE, /* partial_inplace */
1771 0xffff, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1774 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1775 offset to the entry relative to the TOC base (r2). */
1776 HOWTO (R_PPC64_GOT_TPREL16_DS,
1778 1, /* size (0 = byte, 1 = short, 2 = long) */
1780 FALSE, /* pc_relative */
1782 complain_overflow_signed, /* complain_on_overflow */
1783 ppc64_elf_unhandled_reloc, /* special_function */
1784 "R_PPC64_GOT_TPREL16_DS", /* name */
1785 FALSE, /* partial_inplace */
1787 0xfffc, /* dst_mask */
1788 FALSE), /* pcrel_offset */
1790 /* Like GOT_TPREL16_DS, but no overflow. */
1791 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1793 1, /* size (0 = byte, 1 = short, 2 = long) */
1795 FALSE, /* pc_relative */
1797 complain_overflow_dont, /* complain_on_overflow */
1798 ppc64_elf_unhandled_reloc, /* special_function */
1799 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1800 FALSE, /* partial_inplace */
1802 0xfffc, /* dst_mask */
1803 FALSE), /* pcrel_offset */
1805 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1806 HOWTO (R_PPC64_GOT_TPREL16_HI,
1807 16, /* rightshift */
1808 1, /* size (0 = byte, 1 = short, 2 = long) */
1810 FALSE, /* pc_relative */
1812 complain_overflow_dont, /* complain_on_overflow */
1813 ppc64_elf_unhandled_reloc, /* special_function */
1814 "R_PPC64_GOT_TPREL16_HI", /* name */
1815 FALSE, /* partial_inplace */
1817 0xffff, /* dst_mask */
1818 FALSE), /* pcrel_offset */
1820 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1821 HOWTO (R_PPC64_GOT_TPREL16_HA,
1822 16, /* rightshift */
1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE, /* pc_relative */
1827 complain_overflow_dont, /* complain_on_overflow */
1828 ppc64_elf_unhandled_reloc, /* special_function */
1829 "R_PPC64_GOT_TPREL16_HA", /* name */
1830 FALSE, /* partial_inplace */
1832 0xffff, /* dst_mask */
1833 FALSE), /* pcrel_offset */
1835 /* GNU extension to record C++ vtable hierarchy. */
1836 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1838 0, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE, /* pc_relative */
1842 complain_overflow_dont, /* complain_on_overflow */
1843 NULL, /* special_function */
1844 "R_PPC64_GNU_VTINHERIT", /* name */
1845 FALSE, /* partial_inplace */
1848 FALSE), /* pcrel_offset */
1850 /* GNU extension to record C++ vtable member usage. */
1851 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1853 0, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE, /* pc_relative */
1857 complain_overflow_dont, /* complain_on_overflow */
1858 NULL, /* special_function */
1859 "R_PPC64_GNU_VTENTRY", /* name */
1860 FALSE, /* partial_inplace */
1863 FALSE), /* pcrel_offset */
1867 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1871 ppc_howto_init (void)
1873 unsigned int i, type;
1876 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1879 type = ppc64_elf_howto_raw[i].type;
1880 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1881 / sizeof (ppc64_elf_howto_table[0])));
1882 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1886 static reloc_howto_type *
1887 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1888 bfd_reloc_code_real_type code)
1890 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1892 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1893 /* Initialize howto table if needed. */
1901 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1903 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1905 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1907 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1909 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1911 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1913 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1915 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1917 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1919 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1921 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1923 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1925 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1927 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1929 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1931 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1933 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1935 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1937 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1939 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1941 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1943 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1945 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1947 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1949 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1951 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1953 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1955 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1957 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1959 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1961 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1963 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1965 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1967 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1969 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1971 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1973 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1975 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1977 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1979 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1981 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1983 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1985 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1987 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1989 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1991 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1993 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1995 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1997 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1999 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2001 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2003 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2005 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2007 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2009 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2011 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2013 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2015 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2017 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2019 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2021 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2023 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2025 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2027 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2029 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2031 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2033 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2035 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2037 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2039 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2041 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2043 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2045 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2047 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2049 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2051 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2053 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2055 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2057 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2059 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2061 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2063 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2065 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2067 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2069 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2071 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2073 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2075 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2077 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2079 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2081 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2083 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2085 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2087 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2089 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2091 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2093 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2095 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2097 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2099 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2101 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2105 return ppc64_elf_howto_table[r];
2108 /* Set the howto pointer for a PowerPC ELF reloc. */
2111 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2112 Elf_Internal_Rela *dst)
2116 /* Initialize howto table if needed. */
2117 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2120 type = ELF64_R_TYPE (dst->r_info);
2121 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2122 / sizeof (ppc64_elf_howto_table[0])));
2123 cache_ptr->howto = ppc64_elf_howto_table[type];
2126 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2128 static bfd_reloc_status_type
2129 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2130 void *data, asection *input_section,
2131 bfd *output_bfd, char **error_message)
2133 /* If this is a relocatable link (output_bfd test tells us), just
2134 call the generic function. Any adjustment will be done at final
2136 if (output_bfd != NULL)
2137 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2138 input_section, output_bfd, error_message);
2140 /* Adjust the addend for sign extension of the low 16 bits.
2141 We won't actually be using the low 16 bits, so trashing them
2143 reloc_entry->addend += 0x8000;
2144 return bfd_reloc_continue;
2147 static bfd_reloc_status_type
2148 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2149 void *data, asection *input_section,
2150 bfd *output_bfd, char **error_message)
2152 if (output_bfd != NULL)
2153 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2154 input_section, output_bfd, error_message);
2156 if (strcmp (symbol->section->name, ".opd") == 0
2157 && (symbol->section->owner->flags & DYNAMIC) == 0)
2159 bfd_vma dest = opd_entry_value (symbol->section,
2160 symbol->value + reloc_entry->addend,
2162 if (dest != (bfd_vma) -1)
2163 reloc_entry->addend = dest - (symbol->value
2164 + symbol->section->output_section->vma
2165 + symbol->section->output_offset);
2167 return bfd_reloc_continue;
2170 static bfd_reloc_status_type
2171 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2172 void *data, asection *input_section,
2173 bfd *output_bfd, char **error_message)
2176 enum elf_ppc64_reloc_type r_type;
2177 bfd_size_type octets;
2178 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2179 bfd_boolean is_power4 = FALSE;
2181 /* If this is a relocatable link (output_bfd test tells us), just
2182 call the generic function. Any adjustment will be done at final
2184 if (output_bfd != NULL)
2185 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2186 input_section, output_bfd, error_message);
2188 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2189 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2190 insn &= ~(0x01 << 21);
2191 r_type = reloc_entry->howto->type;
2192 if (r_type == R_PPC64_ADDR14_BRTAKEN
2193 || r_type == R_PPC64_REL14_BRTAKEN)
2194 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2198 /* Set 'a' bit. This is 0b00010 in BO field for branch
2199 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2200 for branch on CTR insns (BO == 1a00t or 1a01t). */
2201 if ((insn & (0x14 << 21)) == (0x04 << 21))
2203 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2213 if (!bfd_is_com_section (symbol->section))
2214 target = symbol->value;
2215 target += symbol->section->output_section->vma;
2216 target += symbol->section->output_offset;
2217 target += reloc_entry->addend;
2219 from = (reloc_entry->address
2220 + input_section->output_offset
2221 + input_section->output_section->vma);
2223 /* Invert 'y' bit if not the default. */
2224 if ((bfd_signed_vma) (target - from) < 0)
2227 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2229 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2230 input_section, output_bfd, error_message);
2233 static bfd_reloc_status_type
2234 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2235 void *data, asection *input_section,
2236 bfd *output_bfd, char **error_message)
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2241 if (output_bfd != NULL)
2242 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2243 input_section, output_bfd, error_message);
2245 /* Subtract the symbol section base address. */
2246 reloc_entry->addend -= symbol->section->output_section->vma;
2247 return bfd_reloc_continue;
2250 static bfd_reloc_status_type
2251 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2252 void *data, asection *input_section,
2253 bfd *output_bfd, char **error_message)
2255 /* If this is a relocatable link (output_bfd test tells us), just
2256 call the generic function. Any adjustment will be done at final
2258 if (output_bfd != NULL)
2259 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2260 input_section, output_bfd, error_message);
2262 /* Subtract the symbol section base address. */
2263 reloc_entry->addend -= symbol->section->output_section->vma;
2265 /* Adjust the addend for sign extension of the low 16 bits. */
2266 reloc_entry->addend += 0x8000;
2267 return bfd_reloc_continue;
2270 static bfd_reloc_status_type
2271 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2272 void *data, asection *input_section,
2273 bfd *output_bfd, char **error_message)
2277 /* If this is a relocatable link (output_bfd test tells us), just
2278 call the generic function. Any adjustment will be done at final
2280 if (output_bfd != NULL)
2281 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2282 input_section, output_bfd, error_message);
2284 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2286 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2288 /* Subtract the TOC base address. */
2289 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2290 return bfd_reloc_continue;
2293 static bfd_reloc_status_type
2294 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2295 void *data, asection *input_section,
2296 bfd *output_bfd, char **error_message)
2300 /* If this is a relocatable link (output_bfd test tells us), just
2301 call the generic function. Any adjustment will be done at final
2303 if (output_bfd != NULL)
2304 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2305 input_section, output_bfd, error_message);
2307 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2309 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2311 /* Subtract the TOC base address. */
2312 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2314 /* Adjust the addend for sign extension of the low 16 bits. */
2315 reloc_entry->addend += 0x8000;
2316 return bfd_reloc_continue;
2319 static bfd_reloc_status_type
2320 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2321 void *data, asection *input_section,
2322 bfd *output_bfd, char **error_message)
2325 bfd_size_type octets;
2327 /* If this is a relocatable link (output_bfd test tells us), just
2328 call the generic function. Any adjustment will be done at final
2330 if (output_bfd != NULL)
2331 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2332 input_section, output_bfd, error_message);
2334 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2336 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2338 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2339 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2340 return bfd_reloc_ok;
2343 static bfd_reloc_status_type
2344 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2345 void *data, asection *input_section,
2346 bfd *output_bfd, char **error_message)
2348 /* If this is a relocatable link (output_bfd test tells us), just
2349 call the generic function. Any adjustment will be done at final
2351 if (output_bfd != NULL)
2352 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2353 input_section, output_bfd, error_message);
2355 if (error_message != NULL)
2357 static char buf[60];
2358 sprintf (buf, "generic linker can't handle %s",
2359 reloc_entry->howto->name);
2360 *error_message = buf;
2362 return bfd_reloc_dangerous;
2365 struct ppc64_elf_obj_tdata
2367 struct elf_obj_tdata elf;
2369 /* Shortcuts to dynamic linker sections. */
2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection *deleted_section;
2377 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2378 sections means we potentially need one of these for each input bfd. */
2380 bfd_signed_vma refcount;
2384 /* A copy of relocs before they are modified for --emit-relocs. */
2385 Elf_Internal_Rela *opd_relocs;
2388 #define ppc64_elf_tdata(bfd) \
2389 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2391 #define ppc64_tlsld_got(bfd) \
2392 (&ppc64_elf_tdata (bfd)->tlsld_got)
2394 /* Override the generic function because we store some extras. */
2397 ppc64_elf_mkobject (bfd *abfd)
2399 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2400 abfd->tdata.any = bfd_zalloc (abfd, amt);
2401 if (abfd->tdata.any == NULL)
2406 /* Return 1 if target is one of ours. */
2409 is_ppc64_elf_target (const struct bfd_target *targ)
2411 extern const bfd_target bfd_elf64_powerpc_vec;
2412 extern const bfd_target bfd_elf64_powerpcle_vec;
2414 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2417 /* Fix bad default arch selected for a 64 bit input bfd when the
2418 default is 32 bit. */
2421 ppc64_elf_object_p (bfd *abfd)
2423 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2425 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2427 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2429 /* Relies on arch after 32 bit default being 64 bit default. */
2430 abfd->arch_info = abfd->arch_info->next;
2431 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2437 /* Support for core dump NOTE sections. */
2440 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2442 size_t offset, size;
2444 if (note->descsz != 504)
2448 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2451 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2457 /* Make a ".reg/999" section. */
2458 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2459 size, note->descpos + offset);
2463 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2465 if (note->descsz != 136)
2468 elf_tdata (abfd)->core_program
2469 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2470 elf_tdata (abfd)->core_command
2471 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2476 /* Merge backend specific data from an object file to the output
2477 object file when linking. */
2480 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2482 /* Check if we have the same endianess. */
2483 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2484 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2485 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2489 if (bfd_big_endian (ibfd))
2490 msg = _("%B: compiled for a big endian system "
2491 "and target is little endian");
2493 msg = _("%B: compiled for a little endian system "
2494 "and target is big endian");
2496 (*_bfd_error_handler) (msg, ibfd);
2498 bfd_set_error (bfd_error_wrong_format);
2505 /* Add extra PPC sections. */
2507 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2509 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2510 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2511 { ".plt", 4, 0, SHT_NOBITS, 0 },
2512 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2513 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2514 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2515 { NULL, 0, 0, 0, 0 }
2518 struct _ppc64_elf_section_data
2520 struct bfd_elf_section_data elf;
2522 /* An array with one entry for each opd function descriptor. */
2525 /* Points to the function code section for local opd entries. */
2526 asection **func_sec;
2527 /* After editing .opd, adjust references to opd local syms. */
2531 /* An array for toc sections, indexed by offset/8.
2532 Specifies the relocation symbol index used at a given toc offset. */
2536 #define ppc64_elf_section_data(sec) \
2537 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2540 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2542 struct _ppc64_elf_section_data *sdata;
2543 bfd_size_type amt = sizeof (*sdata);
2545 sdata = bfd_zalloc (abfd, amt);
2548 sec->used_by_bfd = sdata;
2550 return _bfd_elf_new_section_hook (abfd, sec);
2554 get_opd_info (asection * sec)
2557 && ppc64_elf_section_data (sec) != NULL
2558 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2559 return ppc64_elf_section_data (sec)->opd.adjust;
2563 /* Parameters for the qsort hook. */
2564 static asection *synthetic_opd;
2565 static bfd_boolean synthetic_relocatable;
2567 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2570 compare_symbols (const void *ap, const void *bp)
2572 const asymbol *a = * (const asymbol **) ap;
2573 const asymbol *b = * (const asymbol **) bp;
2575 /* Section symbols first. */
2576 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2578 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2581 /* then .opd symbols. */
2582 if (a->section == synthetic_opd && b->section != synthetic_opd)
2584 if (a->section != synthetic_opd && b->section == synthetic_opd)
2587 /* then other code symbols. */
2588 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2589 == (SEC_CODE | SEC_ALLOC)
2590 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2591 != (SEC_CODE | SEC_ALLOC))
2594 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2595 != (SEC_CODE | SEC_ALLOC)
2596 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2597 == (SEC_CODE | SEC_ALLOC))
2600 if (synthetic_relocatable)
2602 if (a->section->id < b->section->id)
2605 if (a->section->id > b->section->id)
2609 if (a->value + a->section->vma < b->value + b->section->vma)
2612 if (a->value + a->section->vma > b->value + b->section->vma)
2618 /* Search SYMS for a symbol of the given VALUE. */
2621 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2629 mid = (lo + hi) >> 1;
2630 if (syms[mid]->value + syms[mid]->section->vma < value)
2632 else if (syms[mid]->value + syms[mid]->section->vma > value)
2642 mid = (lo + hi) >> 1;
2643 if (syms[mid]->section->id < id)
2645 else if (syms[mid]->section->id > id)
2647 else if (syms[mid]->value < value)
2649 else if (syms[mid]->value > value)
2658 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2662 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2663 long static_count, asymbol **static_syms,
2664 long dyn_count, asymbol **dyn_syms,
2671 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2673 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2678 opd = bfd_get_section_by_name (abfd, ".opd");
2682 symcount = static_count;
2684 symcount += dyn_count;
2688 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2692 if (!relocatable && static_count != 0 && dyn_count != 0)
2694 /* Use both symbol tables. */
2695 memcpy (syms, static_syms, static_count * sizeof (*syms));
2696 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2698 else if (!relocatable && static_count == 0)
2699 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2701 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2703 synthetic_opd = opd;
2704 synthetic_relocatable = relocatable;
2705 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2707 if (!relocatable && symcount > 1)
2710 /* Trim duplicate syms, since we may have merged the normal and
2711 dynamic symbols. Actually, we only care about syms that have
2712 different values, so trim any with the same value. */
2713 for (i = 1, j = 1; i < symcount; ++i)
2714 if (syms[i - 1]->value + syms[i - 1]->section->vma
2715 != syms[i]->value + syms[i]->section->vma)
2716 syms[j++] = syms[i];
2721 if (syms[i]->section == opd)
2725 for (; i < symcount; ++i)
2726 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2727 != (SEC_CODE | SEC_ALLOC))
2728 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2732 for (; i < symcount; ++i)
2733 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2737 for (; i < symcount; ++i)
2738 if (syms[i]->section != opd)
2742 for (; i < symcount; ++i)
2743 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2744 != (SEC_CODE | SEC_ALLOC))
2749 if (opdsymend == secsymend)
2754 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2759 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2760 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2763 || ! (*slurp_relocs) (abfd, opd, static_syms, FALSE))
2767 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2771 while (r < opd->relocation + relcount
2772 && r->address < syms[i]->value + opd->vma)
2775 if (r == opd->relocation + relcount)
2778 if (r->address != syms[i]->value + opd->vma)
2781 if (r->howto->type != R_PPC64_ADDR64)
2784 sym = *r->sym_ptr_ptr;
2785 if (!sym_exists_at (syms, opdsymend, symcount,
2786 sym->section->id, sym->value + r->addend))
2789 size += sizeof (asymbol);
2790 size += strlen (syms[i]->name) + 2;
2794 s = *ret = bfd_malloc (size);
2801 names = (char *) (s + count);
2803 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2807 while (r < opd->relocation + relcount
2808 && r->address < syms[i]->value + opd->vma)
2811 if (r == opd->relocation + relcount)
2814 if (r->address != syms[i]->value + opd->vma)
2817 if (r->howto->type != R_PPC64_ADDR64)
2820 sym = *r->sym_ptr_ptr;
2821 if (!sym_exists_at (syms, opdsymend, symcount,
2822 sym->section->id, sym->value + r->addend))
2827 s->section = sym->section;
2828 s->value = sym->value + r->addend;
2831 len = strlen (syms[i]->name);
2832 memcpy (names, syms[i]->name, len + 1);
2843 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2847 free_contents_and_exit:
2854 for (i = secsymend; i < opdsymend; ++i)
2858 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2859 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2862 size += sizeof (asymbol);
2863 size += strlen (syms[i]->name) + 2;
2867 s = *ret = bfd_malloc (size);
2871 goto free_contents_and_exit;
2874 names = (char *) (s + count);
2876 for (i = secsymend; i < opdsymend; ++i)
2880 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2881 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2885 asection *sec = abfd->sections;
2892 long mid = (lo + hi) >> 1;
2893 if (syms[mid]->section->vma < ent)
2895 else if (syms[mid]->section->vma > ent)
2899 sec = syms[mid]->section;
2904 if (lo >= hi && lo > codesecsym)
2905 sec = syms[lo - 1]->section;
2907 for (; sec != NULL; sec = sec->next)
2911 if ((sec->flags & SEC_ALLOC) == 0
2912 || (sec->flags & SEC_LOAD) == 0)
2914 if ((sec->flags & SEC_CODE) != 0)
2917 s->value = ent - s->section->vma;
2920 len = strlen (syms[i]->name);
2921 memcpy (names, syms[i]->name, len + 1);
2934 /* The following functions are specific to the ELF linker, while
2935 functions above are used generally. Those named ppc64_elf_* are
2936 called by the main ELF linker code. They appear in this file more
2937 or less in the order in which they are called. eg.
2938 ppc64_elf_check_relocs is called early in the link process,
2939 ppc64_elf_finish_dynamic_sections is one of the last functions
2942 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2943 functions have both a function code symbol and a function descriptor
2944 symbol. A call to foo in a relocatable object file looks like:
2951 The function definition in another object file might be:
2955 . .quad .TOC.@tocbase
2961 When the linker resolves the call during a static link, the branch
2962 unsurprisingly just goes to .foo and the .opd information is unused.
2963 If the function definition is in a shared library, things are a little
2964 different: The call goes via a plt call stub, the opd information gets
2965 copied to the plt, and the linker patches the nop.
2973 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2974 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2975 . std 2,40(1) # this is the general idea
2983 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2985 The "reloc ()" notation is supposed to indicate that the linker emits
2986 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2989 What are the difficulties here? Well, firstly, the relocations
2990 examined by the linker in check_relocs are against the function code
2991 sym .foo, while the dynamic relocation in the plt is emitted against
2992 the function descriptor symbol, foo. Somewhere along the line, we need
2993 to carefully copy dynamic link information from one symbol to the other.
2994 Secondly, the generic part of the elf linker will make .foo a dynamic
2995 symbol as is normal for most other backends. We need foo dynamic
2996 instead, at least for an application final link. However, when
2997 creating a shared library containing foo, we need to have both symbols
2998 dynamic so that references to .foo are satisfied during the early
2999 stages of linking. Otherwise the linker might decide to pull in a
3000 definition from some other object, eg. a static library.
3002 Update: As of August 2004, we support a new convention. Function
3003 calls may use the function descriptor symbol, ie. "bl foo". This
3004 behaves exactly as "bl .foo". */
3006 /* The linker needs to keep track of the number of relocs that it
3007 decides to copy as dynamic relocs in check_relocs for each symbol.
3008 This is so that it can later discard them if they are found to be
3009 unnecessary. We store the information in a field extending the
3010 regular ELF linker hash table. */
3012 struct ppc_dyn_relocs
3014 struct ppc_dyn_relocs *next;
3016 /* The input section of the reloc. */
3019 /* Total number of relocs copied for the input section. */
3020 bfd_size_type count;
3022 /* Number of pc-relative relocs copied for the input section. */
3023 bfd_size_type pc_count;
3026 /* Track GOT entries needed for a given symbol. We might need more
3027 than one got entry per symbol. */
3030 struct got_entry *next;
3032 /* The symbol addend that we'll be placing in the GOT. */
3035 /* Unlike other ELF targets, we use separate GOT entries for the same
3036 symbol referenced from different input files. This is to support
3037 automatic multiple TOC/GOT sections, where the TOC base can vary
3038 from one input file to another.
3040 Point to the BFD owning this GOT entry. */
3043 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3044 TLS_TPREL or TLS_DTPREL for tls entries. */
3047 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3050 bfd_signed_vma refcount;
3055 /* The same for PLT. */
3058 struct plt_entry *next;
3064 bfd_signed_vma refcount;
3069 /* Of those relocs that might be copied as dynamic relocs, this macro
3070 selects those that must be copied when linking a shared library,
3071 even when the symbol is local. */
3073 #define MUST_BE_DYN_RELOC(RTYPE) \
3074 ((RTYPE) != R_PPC64_REL32 \
3075 && (RTYPE) != R_PPC64_REL64 \
3076 && (RTYPE) != R_PPC64_REL30)
3078 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
3081 shared lib. With code that gcc generates, it's vital that this be
3082 enabled; In the PowerPC64 ABI, the address of a function is actually
3083 the address of a function descriptor, which resides in the .opd
3084 section. gcc uses the descriptor directly rather than going via the
3085 GOT as some other ABI's do, which means that initialized function
3086 pointers must reference the descriptor. Thus, a function pointer
3087 initialized to the address of a function in a shared library will
3088 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3089 redefines the function descriptor symbol to point to the copy. This
3090 presents a problem as a plt entry for that function is also
3091 initialized from the function descriptor symbol and the copy reloc
3092 may not be initialized first. */
3093 #define ELIMINATE_COPY_RELOCS 1
3095 /* Section name for stubs is the associated section name plus this
3097 #define STUB_SUFFIX ".stub"
3100 ppc_stub_long_branch:
3101 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3102 destination, but a 24 bit branch in a stub section will reach.
3105 ppc_stub_plt_branch:
3106 Similar to the above, but a 24 bit branch in the stub section won't
3107 reach its destination.
3108 . addis %r12,%r2,xxx@toc@ha
3109 . ld %r11,xxx@toc@l(%r12)
3114 Used to call a function in a shared library. If it so happens that
3115 the plt entry referenced crosses a 64k boundary, then an extra
3116 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3117 xxx+16 as appropriate.
3118 . addis %r12,%r2,xxx@toc@ha
3120 . ld %r11,xxx+0@toc@l(%r12)
3121 . ld %r2,xxx+8@toc@l(%r12)
3123 . ld %r11,xxx+16@toc@l(%r12)
3126 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3127 code to adjust the value and save r2 to support multiple toc sections.
3128 A ppc_stub_long_branch with an r2 offset looks like:
3130 . addis %r2,%r2,off@ha
3131 . addi %r2,%r2,off@l
3134 A ppc_stub_plt_branch with an r2 offset looks like:
3136 . addis %r12,%r2,xxx@toc@ha
3137 . ld %r11,xxx@toc@l(%r12)
3138 . addis %r2,%r2,off@ha
3139 . addi %r2,%r2,off@l
3144 enum ppc_stub_type {
3146 ppc_stub_long_branch,
3147 ppc_stub_long_branch_r2off,
3148 ppc_stub_plt_branch,
3149 ppc_stub_plt_branch_r2off,
3153 struct ppc_stub_hash_entry {
3155 /* Base hash table entry structure. */
3156 struct bfd_hash_entry root;
3158 enum ppc_stub_type stub_type;
3160 /* The stub section. */
3163 /* Offset within stub_sec of the beginning of this stub. */
3164 bfd_vma stub_offset;
3166 /* Given the symbol's value and its section we can determine its final
3167 value when building the stubs (so the stub knows where to jump. */
3168 bfd_vma target_value;
3169 asection *target_section;
3171 /* The symbol table entry, if any, that this was derived from. */
3172 struct ppc_link_hash_entry *h;
3174 /* And the reloc addend that this was derived from. */
3177 /* Where this stub is being called from, or, in the case of combined
3178 stub sections, the first input section in the group. */
3182 struct ppc_branch_hash_entry {
3184 /* Base hash table entry structure. */
3185 struct bfd_hash_entry root;
3187 /* Offset within .branch_lt. */
3188 unsigned int offset;
3190 /* Generation marker. */
3194 struct ppc_link_hash_entry
3196 struct elf_link_hash_entry elf;
3198 /* A pointer to the most recently used stub hash entry against this
3200 struct ppc_stub_hash_entry *stub_cache;
3202 /* Track dynamic relocs copied for this symbol. */
3203 struct ppc_dyn_relocs *dyn_relocs;
3205 /* Link between function code and descriptor symbols. */
3206 struct ppc_link_hash_entry *oh;
3208 /* Flag function code and descriptor symbols. */
3209 unsigned int is_func:1;
3210 unsigned int is_func_descriptor:1;
3212 /* Whether global opd/toc sym has been adjusted or not.
3213 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3214 should be set for all globals defined in any opd/toc section. */
3215 unsigned int adjust_done:1;
3217 /* Set if we twiddled this symbol to weak at some stage. */
3218 unsigned int was_undefined:1;
3220 /* Contexts in which symbol is used in the GOT (or TOC).
3221 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3222 corresponding relocs are encountered during check_relocs.
3223 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3224 indicate the corresponding GOT entry type is not needed.
3225 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3226 a TPREL one. We use a separate flag rather than setting TPREL
3227 just for convenience in distinguishing the two cases. */
3228 #define TLS_GD 1 /* GD reloc. */
3229 #define TLS_LD 2 /* LD reloc. */
3230 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3231 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3232 #define TLS_TLS 16 /* Any TLS reloc. */
3233 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3234 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3238 /* ppc64 ELF linker hash table. */
3240 struct ppc_link_hash_table
3242 struct elf_link_hash_table elf;
3244 /* The stub hash table. */
3245 struct bfd_hash_table stub_hash_table;
3247 /* Another hash table for plt_branch stubs. */
3248 struct bfd_hash_table branch_hash_table;
3250 /* Linker stub bfd. */
3253 /* Linker call-backs. */
3254 asection * (*add_stub_section) (const char *, asection *);
3255 void (*layout_sections_again) (void);
3257 /* Array to keep track of which stub sections have been created, and
3258 information on stub grouping. */
3260 /* This is the section to which stubs in the group will be attached. */
3262 /* The stub section. */
3264 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3268 /* Temp used when calculating TOC pointers. */
3271 /* Highest input section id. */
3274 /* Highest output section index. */
3277 /* List of input sections for each output section. */
3278 asection **input_list;
3280 /* Short-cuts to get to dynamic linker sections. */
3291 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3292 struct ppc_link_hash_entry *tls_get_addr;
3293 struct ppc_link_hash_entry *tls_get_addr_fd;
3296 unsigned long stub_count[ppc_stub_plt_call];
3298 /* Number of stubs against global syms. */
3299 unsigned long stub_globals;
3301 /* Set if we should emit symbols for stubs. */
3302 unsigned int emit_stub_syms:1;
3304 /* Support for multiple toc sections. */
3305 unsigned int no_multi_toc:1;
3306 unsigned int multi_toc_needed:1;
3309 unsigned int stub_error:1;
3311 /* Flag set when small branches are detected. Used to
3312 select suitable defaults for the stub group size. */
3313 unsigned int has_14bit_branch:1;
3315 /* Temp used by ppc64_elf_check_directives. */
3316 unsigned int twiddled_syms:1;
3318 /* Incremented every time we size stubs. */
3319 unsigned int stub_iteration;
3321 /* Small local sym to section mapping cache. */
3322 struct sym_sec_cache sym_sec;
3325 /* Rename some of the generic section flags to better document how they
3327 #define has_toc_reloc has_gp_reloc
3328 #define makes_toc_func_call need_finalize_relax
3329 #define call_check_in_progress reloc_done
3331 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3333 #define ppc_hash_table(p) \
3334 ((struct ppc_link_hash_table *) ((p)->hash))
3336 #define ppc_stub_hash_lookup(table, string, create, copy) \
3337 ((struct ppc_stub_hash_entry *) \
3338 bfd_hash_lookup ((table), (string), (create), (copy)))
3340 #define ppc_branch_hash_lookup(table, string, create, copy) \
3341 ((struct ppc_branch_hash_entry *) \
3342 bfd_hash_lookup ((table), (string), (create), (copy)))
3344 /* Create an entry in the stub hash table. */
3346 static struct bfd_hash_entry *
3347 stub_hash_newfunc (struct bfd_hash_entry *entry,
3348 struct bfd_hash_table *table,
3351 /* Allocate the structure if it has not already been allocated by a
3355 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3360 /* Call the allocation method of the superclass. */
3361 entry = bfd_hash_newfunc (entry, table, string);
3364 struct ppc_stub_hash_entry *eh;
3366 /* Initialize the local fields. */
3367 eh = (struct ppc_stub_hash_entry *) entry;
3368 eh->stub_type = ppc_stub_none;
3369 eh->stub_sec = NULL;
3370 eh->stub_offset = 0;
3371 eh->target_value = 0;
3372 eh->target_section = NULL;
3380 /* Create an entry in the branch hash table. */
3382 static struct bfd_hash_entry *
3383 branch_hash_newfunc (struct bfd_hash_entry *entry,
3384 struct bfd_hash_table *table,
3387 /* Allocate the structure if it has not already been allocated by a
3391 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3396 /* Call the allocation method of the superclass. */
3397 entry = bfd_hash_newfunc (entry, table, string);
3400 struct ppc_branch_hash_entry *eh;
3402 /* Initialize the local fields. */
3403 eh = (struct ppc_branch_hash_entry *) entry;
3411 /* Create an entry in a ppc64 ELF linker hash table. */
3413 static struct bfd_hash_entry *
3414 link_hash_newfunc (struct bfd_hash_entry *entry,
3415 struct bfd_hash_table *table,
3418 /* Allocate the structure if it has not already been allocated by a
3422 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3427 /* Call the allocation method of the superclass. */
3428 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3431 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3433 eh->stub_cache = NULL;
3434 eh->dyn_relocs = NULL;
3437 eh->is_func_descriptor = 0;
3438 eh->adjust_done = 0;
3439 eh->was_undefined = 0;
3446 /* Create a ppc64 ELF linker hash table. */
3448 static struct bfd_link_hash_table *
3449 ppc64_elf_link_hash_table_create (bfd *abfd)
3451 struct ppc_link_hash_table *htab;
3452 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3454 htab = bfd_zmalloc (amt);
3458 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3464 /* Init the stub hash table too. */
3465 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3468 /* And the branch hash table. */
3469 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3472 /* Initializing two fields of the union is just cosmetic. We really
3473 only care about glist, but when compiled on a 32-bit host the
3474 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3475 debugger inspection of these fields look nicer. */
3476 htab->elf.init_refcount.refcount = 0;
3477 htab->elf.init_refcount.glist = NULL;
3478 htab->elf.init_offset.offset = 0;
3479 htab->elf.init_offset.glist = NULL;
3481 return &htab->elf.root;
3484 /* Free the derived linker hash table. */
3487 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3489 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3491 bfd_hash_table_free (&ret->stub_hash_table);
3492 bfd_hash_table_free (&ret->branch_hash_table);
3493 _bfd_generic_link_hash_table_free (hash);
3496 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3499 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3501 struct ppc_link_hash_table *htab;
3503 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3505 /* Always hook our dynamic sections into the first bfd, which is the
3506 linker created stub bfd. This ensures that the GOT header is at
3507 the start of the output TOC section. */
3508 htab = ppc_hash_table (info);
3509 htab->stub_bfd = abfd;
3510 htab->elf.dynobj = abfd;
3513 /* Build a name for an entry in the stub hash table. */
3516 ppc_stub_name (const asection *input_section,
3517 const asection *sym_sec,
3518 const struct ppc_link_hash_entry *h,
3519 const Elf_Internal_Rela *rel)
3524 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3525 offsets from a sym as a branch target? In fact, we could
3526 probably assume the addend is always zero. */
3527 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3531 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3532 stub_name = bfd_malloc (len);
3533 if (stub_name != NULL)
3535 sprintf (stub_name, "%08x.%s+%x",
3536 input_section->id & 0xffffffff,
3537 h->elf.root.root.string,
3538 (int) rel->r_addend & 0xffffffff);
3543 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3544 stub_name = bfd_malloc (len);
3545 if (stub_name != NULL)
3547 sprintf (stub_name, "%08x.%x:%x+%x",
3548 input_section->id & 0xffffffff,
3549 sym_sec->id & 0xffffffff,
3550 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3551 (int) rel->r_addend & 0xffffffff);
3554 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3555 stub_name[len - 2] = 0;
3559 /* Look up an entry in the stub hash. Stub entries are cached because
3560 creating the stub name takes a bit of time. */
3562 static struct ppc_stub_hash_entry *
3563 ppc_get_stub_entry (const asection *input_section,
3564 const asection *sym_sec,
3565 struct ppc_link_hash_entry *h,
3566 const Elf_Internal_Rela *rel,
3567 struct ppc_link_hash_table *htab)
3569 struct ppc_stub_hash_entry *stub_entry;
3570 const asection *id_sec;
3572 /* If this input section is part of a group of sections sharing one
3573 stub section, then use the id of the first section in the group.
3574 Stub names need to include a section id, as there may well be
3575 more than one stub used to reach say, printf, and we need to
3576 distinguish between them. */
3577 id_sec = htab->stub_group[input_section->id].link_sec;
3579 if (h != NULL && h->stub_cache != NULL
3580 && h->stub_cache->h == h
3581 && h->stub_cache->id_sec == id_sec)
3583 stub_entry = h->stub_cache;
3589 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3590 if (stub_name == NULL)
3593 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3594 stub_name, FALSE, FALSE);
3596 h->stub_cache = stub_entry;
3604 /* Add a new stub entry to the stub hash. Not all fields of the new
3605 stub entry are initialised. */
3607 static struct ppc_stub_hash_entry *
3608 ppc_add_stub (const char *stub_name,
3610 struct ppc_link_hash_table *htab)
3614 struct ppc_stub_hash_entry *stub_entry;
3616 link_sec = htab->stub_group[section->id].link_sec;
3617 stub_sec = htab->stub_group[section->id].stub_sec;
3618 if (stub_sec == NULL)
3620 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3621 if (stub_sec == NULL)
3627 namelen = strlen (link_sec->name);
3628 len = namelen + sizeof (STUB_SUFFIX);
3629 s_name = bfd_alloc (htab->stub_bfd, len);
3633 memcpy (s_name, link_sec->name, namelen);
3634 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3635 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3636 if (stub_sec == NULL)
3638 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3640 htab->stub_group[section->id].stub_sec = stub_sec;
3643 /* Enter this entry into the linker stub hash table. */
3644 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3646 if (stub_entry == NULL)
3648 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3649 section->owner, stub_name);
3653 stub_entry->stub_sec = stub_sec;
3654 stub_entry->stub_offset = 0;
3655 stub_entry->id_sec = link_sec;
3659 /* Create sections for linker generated code. */
3662 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3664 struct ppc_link_hash_table *htab;
3667 htab = ppc_hash_table (info);
3669 /* Create .sfpr for code to save and restore fp regs. */
3670 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3671 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3672 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3673 if (htab->sfpr == NULL
3674 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3675 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3678 /* Create .glink for lazy dynamic linking support. */
3679 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3680 if (htab->glink == NULL
3681 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3682 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3685 /* Create .branch_lt for plt_branch stubs. */
3686 flags = (SEC_ALLOC | SEC_LOAD
3687 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3688 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3689 if (htab->brlt == NULL
3690 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3691 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3694 if (info->shared || info->emitrelocations)
3696 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3697 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3698 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3700 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3701 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3707 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3708 not already done. */
3711 create_got_section (bfd *abfd, struct bfd_link_info *info)
3713 asection *got, *relgot;
3715 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3719 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3722 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3727 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3728 | SEC_LINKER_CREATED);
3730 got = bfd_make_section (abfd, ".got");
3732 || !bfd_set_section_flags (abfd, got, flags)
3733 || !bfd_set_section_alignment (abfd, got, 3))
3736 relgot = bfd_make_section (abfd, ".rela.got");
3738 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3739 || ! bfd_set_section_alignment (abfd, relgot, 3))
3742 ppc64_elf_tdata (abfd)->got = got;
3743 ppc64_elf_tdata (abfd)->relgot = relgot;
3747 /* Create the dynamic sections, and set up shortcuts. */
3750 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3752 struct ppc_link_hash_table *htab;
3754 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3757 htab = ppc_hash_table (info);
3759 htab->got = bfd_get_section_by_name (dynobj, ".got");
3760 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3761 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3762 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3764 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3766 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3767 || (!info->shared && !htab->relbss))
3773 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3776 ppc64_elf_copy_indirect_symbol
3777 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3778 struct elf_link_hash_entry *dir,
3779 struct elf_link_hash_entry *ind)
3781 struct ppc_link_hash_entry *edir, *eind;
3783 edir = (struct ppc_link_hash_entry *) dir;
3784 eind = (struct ppc_link_hash_entry *) ind;
3786 /* Copy over any dynamic relocs we may have on the indirect sym. */
3787 if (eind->dyn_relocs != NULL)
3789 if (edir->dyn_relocs != NULL)
3791 struct ppc_dyn_relocs **pp;
3792 struct ppc_dyn_relocs *p;
3794 if (eind->elf.root.type == bfd_link_hash_indirect)
3797 /* Add reloc counts against the weak sym to the strong sym
3798 list. Merge any entries against the same section. */
3799 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3801 struct ppc_dyn_relocs *q;
3803 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3804 if (q->sec == p->sec)
3806 q->pc_count += p->pc_count;
3807 q->count += p->count;
3814 *pp = edir->dyn_relocs;
3817 edir->dyn_relocs = eind->dyn_relocs;
3818 eind->dyn_relocs = NULL;
3821 edir->is_func |= eind->is_func;
3822 edir->is_func_descriptor |= eind->is_func_descriptor;
3823 edir->tls_mask |= eind->tls_mask;
3825 /* If called to transfer flags for a weakdef during processing
3826 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3827 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3828 if (!(ELIMINATE_COPY_RELOCS
3829 && eind->elf.root.type != bfd_link_hash_indirect
3830 && edir->elf.dynamic_adjusted))
3831 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3833 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3834 edir->elf.ref_regular |= eind->elf.ref_regular;
3835 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3836 edir->elf.needs_plt |= eind->elf.needs_plt;
3838 /* If we were called to copy over info for a weak sym, that's all. */
3839 if (eind->elf.root.type != bfd_link_hash_indirect)
3842 /* Copy over got entries that we may have already seen to the
3843 symbol which just became indirect. */
3844 if (eind->elf.got.glist != NULL)
3846 if (edir->elf.got.glist != NULL)
3848 struct got_entry **entp;
3849 struct got_entry *ent;
3851 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3853 struct got_entry *dent;
3855 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3856 if (dent->addend == ent->addend
3857 && dent->owner == ent->owner
3858 && dent->tls_type == ent->tls_type)
3860 dent->got.refcount += ent->got.refcount;
3867 *entp = edir->elf.got.glist;
3870 edir->elf.got.glist = eind->elf.got.glist;
3871 eind->elf.got.glist = NULL;
3874 /* And plt entries. */
3875 if (eind->elf.plt.plist != NULL)
3877 if (edir->elf.plt.plist != NULL)
3879 struct plt_entry **entp;
3880 struct plt_entry *ent;
3882 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3884 struct plt_entry *dent;
3886 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3887 if (dent->addend == ent->addend)
3889 dent->plt.refcount += ent->plt.refcount;
3896 *entp = edir->elf.plt.plist;
3899 edir->elf.plt.plist = eind->elf.plt.plist;
3900 eind->elf.plt.plist = NULL;
3903 if (edir->elf.dynindx == -1)
3905 edir->elf.dynindx = eind->elf.dynindx;
3906 edir->elf.dynstr_index = eind->elf.dynstr_index;
3907 eind->elf.dynindx = -1;
3908 eind->elf.dynstr_index = 0;
3911 BFD_ASSERT (eind->elf.dynindx == -1);
3914 /* Find the function descriptor hash entry from the given function code
3915 hash entry FH. Link the entries via their OH fields. */
3917 static struct ppc_link_hash_entry *
3918 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3920 struct ppc_link_hash_entry *fdh = fh->oh;
3924 const char *fd_name = fh->elf.root.root.string + 1;
3926 fdh = (struct ppc_link_hash_entry *)
3927 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3930 fdh->is_func_descriptor = 1;
3940 /* Hacks to support old ABI code.
3941 When making function calls, old ABI code references function entry
3942 points (dot symbols), while new ABI code references the function
3943 descriptor symbol. We need to make any combination of reference and
3944 definition work together, without breaking archive linking.
3946 For a defined function "foo" and an undefined call to "bar":
3947 An old object defines "foo" and ".foo", references ".bar" (possibly
3949 A new object defines "foo" and references "bar".
3951 A new object thus has no problem with its undefined symbols being
3952 satisfied by definitions in an old object. On the other hand, the
3953 old object won't have ".bar" satisfied by a new object. */
3955 /* Fix function descriptor symbols defined in .opd sections to be
3959 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3960 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3961 Elf_Internal_Sym *isym,
3962 const char **name ATTRIBUTE_UNUSED,
3963 flagword *flags ATTRIBUTE_UNUSED,
3965 bfd_vma *value ATTRIBUTE_UNUSED)
3968 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3969 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3973 /* This function makes an old ABI object reference to ".bar" cause the
3974 inclusion of a new ABI object archive that defines "bar". */
3976 static struct elf_link_hash_entry *
3977 ppc64_elf_archive_symbol_lookup (bfd *abfd,
3978 struct bfd_link_info *info,
3981 struct elf_link_hash_entry *h;
3985 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
3992 len = strlen (name);
3993 dot_name = bfd_alloc (abfd, len + 2);
3994 if (dot_name == NULL)
3995 return (struct elf_link_hash_entry *) 0 - 1;
3997 memcpy (dot_name + 1, name, len + 1);
3998 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
3999 bfd_release (abfd, dot_name);
4003 /* This function satisfies all old ABI object references to ".bar" if a
4004 new ABI object defines "bar". Well, at least, undefined dot symbols
4005 are made weak. This stops later archive searches from including an
4006 object if we already have a function descriptor definition. It also
4007 prevents the linker complaining about undefined symbols.
4008 We also check and correct mismatched symbol visibility here. The
4009 most restrictive visibility of the function descriptor and the
4010 function entry symbol is used. */
4013 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4015 struct bfd_link_info *info;
4016 struct ppc_link_hash_table *htab;
4017 struct ppc_link_hash_entry *eh;
4018 struct ppc_link_hash_entry *fdh;
4020 if (h->root.type == bfd_link_hash_indirect)
4023 if (h->root.type == bfd_link_hash_warning)
4024 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4026 if (h->root.root.string[0] != '.')
4030 htab = ppc_hash_table (info);
4031 eh = (struct ppc_link_hash_entry *) h;
4032 fdh = get_fdh (eh, htab);
4035 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4036 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4037 if (entry_vis < descr_vis)
4038 fdh->elf.other += entry_vis - descr_vis;
4039 else if (entry_vis > descr_vis)
4040 eh->elf.other += descr_vis - entry_vis;
4042 if (eh->elf.root.type == bfd_link_hash_undefined)
4044 eh->elf.root.type = bfd_link_hash_undefweak;
4045 eh->was_undefined = 1;
4046 htab->twiddled_syms = 1;
4054 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4055 struct bfd_link_info *info)
4057 struct ppc_link_hash_table *htab;
4059 htab = ppc_hash_table (info);
4060 if (!is_ppc64_elf_target (htab->elf.root.creator))
4063 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info);
4065 /* We need to fix the undefs list for any syms we have twiddled to
4067 if (htab->twiddled_syms)
4069 bfd_link_repair_undef_list (&htab->elf.root);
4070 htab->twiddled_syms = 0;
4076 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4077 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4079 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4080 char *local_got_tls_masks;
4082 if (local_got_ents == NULL)
4084 bfd_size_type size = symtab_hdr->sh_info;
4086 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4087 local_got_ents = bfd_zalloc (abfd, size);
4088 if (local_got_ents == NULL)
4090 elf_local_got_ents (abfd) = local_got_ents;
4093 if ((tls_type & TLS_EXPLICIT) == 0)
4095 struct got_entry *ent;
4097 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4098 if (ent->addend == r_addend
4099 && ent->owner == abfd
4100 && ent->tls_type == tls_type)
4104 bfd_size_type amt = sizeof (*ent);
4105 ent = bfd_alloc (abfd, amt);
4108 ent->next = local_got_ents[r_symndx];
4109 ent->addend = r_addend;
4111 ent->tls_type = tls_type;
4112 ent->got.refcount = 0;
4113 local_got_ents[r_symndx] = ent;
4115 ent->got.refcount += 1;
4118 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4119 local_got_tls_masks[r_symndx] |= tls_type;
4124 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4126 struct plt_entry *ent;
4128 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4129 if (ent->addend == addend)
4133 bfd_size_type amt = sizeof (*ent);
4134 ent = bfd_alloc (abfd, amt);
4137 ent->next = eh->elf.plt.plist;
4138 ent->addend = addend;
4139 ent->plt.refcount = 0;
4140 eh->elf.plt.plist = ent;
4142 ent->plt.refcount += 1;
4143 eh->elf.needs_plt = 1;
4148 /* Look through the relocs for a section during the first phase, and
4149 calculate needed space in the global offset table, procedure
4150 linkage table, and dynamic reloc sections. */
4153 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4154 asection *sec, const Elf_Internal_Rela *relocs)
4156 struct ppc_link_hash_table *htab;
4157 Elf_Internal_Shdr *symtab_hdr;
4158 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4159 const Elf_Internal_Rela *rel;
4160 const Elf_Internal_Rela *rel_end;
4162 asection **opd_sym_map;
4164 if (info->relocatable)
4167 /* Don't do anything special with non-loaded, non-alloced sections.
4168 In particular, any relocs in such sections should not affect GOT
4169 and PLT reference counting (ie. we don't allow them to create GOT
4170 or PLT entries), there's no possibility or desire to optimize TLS
4171 relocs, and there's not much point in propagating relocs to shared
4172 libs that the dynamic linker won't relocate. */
4173 if ((sec->flags & SEC_ALLOC) == 0)
4176 htab = ppc_hash_table (info);
4177 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4179 sym_hashes = elf_sym_hashes (abfd);
4180 sym_hashes_end = (sym_hashes
4181 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4182 - symtab_hdr->sh_info);
4186 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4188 /* Garbage collection needs some extra help with .opd sections.
4189 We don't want to necessarily keep everything referenced by
4190 relocs in .opd, as that would keep all functions. Instead,
4191 if we reference an .opd symbol (a function descriptor), we
4192 want to keep the function code symbol's section. This is
4193 easy for global symbols, but for local syms we need to keep
4194 information about the associated function section. Later, if
4195 edit_opd deletes entries, we'll use this array to adjust
4196 local syms in .opd. */
4198 asection *func_section;
4203 amt = sec->size * sizeof (union opd_info) / 8;
4204 opd_sym_map = bfd_zalloc (abfd, amt);
4205 if (opd_sym_map == NULL)
4207 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4210 if (htab->sfpr == NULL
4211 && !create_linkage_sections (htab->elf.dynobj, info))
4214 rel_end = relocs + sec->reloc_count;
4215 for (rel = relocs; rel < rel_end; rel++)
4217 unsigned long r_symndx;
4218 struct elf_link_hash_entry *h;
4219 enum elf_ppc64_reloc_type r_type;
4222 r_symndx = ELF64_R_SYM (rel->r_info);
4223 if (r_symndx < symtab_hdr->sh_info)
4226 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4228 r_type = ELF64_R_TYPE (rel->r_info);
4231 case R_PPC64_GOT_TLSLD16:
4232 case R_PPC64_GOT_TLSLD16_LO:
4233 case R_PPC64_GOT_TLSLD16_HI:
4234 case R_PPC64_GOT_TLSLD16_HA:
4235 ppc64_tlsld_got (abfd)->refcount += 1;
4236 tls_type = TLS_TLS | TLS_LD;
4239 case R_PPC64_GOT_TLSGD16:
4240 case R_PPC64_GOT_TLSGD16_LO:
4241 case R_PPC64_GOT_TLSGD16_HI:
4242 case R_PPC64_GOT_TLSGD16_HA:
4243 tls_type = TLS_TLS | TLS_GD;
4246 case R_PPC64_GOT_TPREL16_DS:
4247 case R_PPC64_GOT_TPREL16_LO_DS:
4248 case R_PPC64_GOT_TPREL16_HI:
4249 case R_PPC64_GOT_TPREL16_HA:
4251 info->flags |= DF_STATIC_TLS;
4252 tls_type = TLS_TLS | TLS_TPREL;
4255 case R_PPC64_GOT_DTPREL16_DS:
4256 case R_PPC64_GOT_DTPREL16_LO_DS:
4257 case R_PPC64_GOT_DTPREL16_HI:
4258 case R_PPC64_GOT_DTPREL16_HA:
4259 tls_type = TLS_TLS | TLS_DTPREL;
4261 sec->has_tls_reloc = 1;
4265 case R_PPC64_GOT16_DS:
4266 case R_PPC64_GOT16_HA:
4267 case R_PPC64_GOT16_HI:
4268 case R_PPC64_GOT16_LO:
4269 case R_PPC64_GOT16_LO_DS:
4270 /* This symbol requires a global offset table entry. */
4271 sec->has_toc_reloc = 1;
4272 if (ppc64_elf_tdata (abfd)->got == NULL
4273 && !create_got_section (abfd, info))
4278 struct ppc_link_hash_entry *eh;
4279 struct got_entry *ent;
4281 eh = (struct ppc_link_hash_entry *) h;
4282 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4283 if (ent->addend == rel->r_addend
4284 && ent->owner == abfd
4285 && ent->tls_type == tls_type)
4289 bfd_size_type amt = sizeof (*ent);
4290 ent = bfd_alloc (abfd, amt);
4293 ent->next = eh->elf.got.glist;
4294 ent->addend = rel->r_addend;
4296 ent->tls_type = tls_type;
4297 ent->got.refcount = 0;
4298 eh->elf.got.glist = ent;
4300 ent->got.refcount += 1;
4301 eh->tls_mask |= tls_type;
4304 /* This is a global offset table entry for a local symbol. */
4305 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4306 rel->r_addend, tls_type))
4310 case R_PPC64_PLT16_HA:
4311 case R_PPC64_PLT16_HI:
4312 case R_PPC64_PLT16_LO:
4315 /* This symbol requires a procedure linkage table entry. We
4316 actually build the entry in adjust_dynamic_symbol,
4317 because this might be a case of linking PIC code without
4318 linking in any dynamic objects, in which case we don't
4319 need to generate a procedure linkage table after all. */
4322 /* It does not make sense to have a procedure linkage
4323 table entry for a local symbol. */
4324 bfd_set_error (bfd_error_bad_value);
4328 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4333 /* The following relocations don't need to propagate the
4334 relocation if linking a shared object since they are
4335 section relative. */
4336 case R_PPC64_SECTOFF:
4337 case R_PPC64_SECTOFF_LO:
4338 case R_PPC64_SECTOFF_HI:
4339 case R_PPC64_SECTOFF_HA:
4340 case R_PPC64_SECTOFF_DS:
4341 case R_PPC64_SECTOFF_LO_DS:
4342 case R_PPC64_DTPREL16:
4343 case R_PPC64_DTPREL16_LO:
4344 case R_PPC64_DTPREL16_HI:
4345 case R_PPC64_DTPREL16_HA:
4346 case R_PPC64_DTPREL16_DS:
4347 case R_PPC64_DTPREL16_LO_DS:
4348 case R_PPC64_DTPREL16_HIGHER:
4349 case R_PPC64_DTPREL16_HIGHERA:
4350 case R_PPC64_DTPREL16_HIGHEST:
4351 case R_PPC64_DTPREL16_HIGHESTA:
4356 case R_PPC64_TOC16_LO:
4357 case R_PPC64_TOC16_HI:
4358 case R_PPC64_TOC16_HA:
4359 case R_PPC64_TOC16_DS:
4360 case R_PPC64_TOC16_LO_DS:
4361 sec->has_toc_reloc = 1;
4364 /* This relocation describes the C++ object vtable hierarchy.
4365 Reconstruct it for later use during GC. */
4366 case R_PPC64_GNU_VTINHERIT:
4367 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4371 /* This relocation describes which C++ vtable entries are actually
4372 used. Record for later use during GC. */
4373 case R_PPC64_GNU_VTENTRY:
4374 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4379 case R_PPC64_REL14_BRTAKEN:
4380 case R_PPC64_REL14_BRNTAKEN:
4381 htab->has_14bit_branch = 1;
4387 /* We may need a .plt entry if the function this reloc
4388 refers to is in a shared lib. */
4389 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4392 if (h == &htab->tls_get_addr->elf
4393 || h == &htab->tls_get_addr_fd->elf)
4394 sec->has_tls_reloc = 1;
4395 else if (htab->tls_get_addr == NULL
4396 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4397 && (h->root.root.string[15] == 0
4398 || h->root.root.string[15] == '@'))
4400 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4401 sec->has_tls_reloc = 1;
4403 else if (htab->tls_get_addr_fd == NULL
4404 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4405 && (h->root.root.string[14] == 0
4406 || h->root.root.string[14] == '@'))
4408 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4409 sec->has_tls_reloc = 1;
4414 case R_PPC64_TPREL64:
4415 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4417 info->flags |= DF_STATIC_TLS;
4420 case R_PPC64_DTPMOD64:
4421 if (rel + 1 < rel_end
4422 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4423 && rel[1].r_offset == rel->r_offset + 8)
4424 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4426 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4429 case R_PPC64_DTPREL64:
4430 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4432 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4433 && rel[-1].r_offset == rel->r_offset - 8)
4434 /* This is the second reloc of a dtpmod, dtprel pair.
4435 Don't mark with TLS_DTPREL. */
4439 sec->has_tls_reloc = 1;
4442 struct ppc_link_hash_entry *eh;
4443 eh = (struct ppc_link_hash_entry *) h;
4444 eh->tls_mask |= tls_type;
4447 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4448 rel->r_addend, tls_type))
4451 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4453 /* One extra to simplify get_tls_mask. */
4454 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4455 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4456 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4459 BFD_ASSERT (rel->r_offset % 8 == 0);
4460 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4462 /* Mark the second slot of a GD or LD entry.
4463 -1 to indicate GD and -2 to indicate LD. */
4464 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4465 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4466 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4467 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4470 case R_PPC64_TPREL16:
4471 case R_PPC64_TPREL16_LO:
4472 case R_PPC64_TPREL16_HI:
4473 case R_PPC64_TPREL16_HA:
4474 case R_PPC64_TPREL16_DS:
4475 case R_PPC64_TPREL16_LO_DS:
4476 case R_PPC64_TPREL16_HIGHER:
4477 case R_PPC64_TPREL16_HIGHERA:
4478 case R_PPC64_TPREL16_HIGHEST:
4479 case R_PPC64_TPREL16_HIGHESTA:
4482 info->flags |= DF_STATIC_TLS;
4487 case R_PPC64_ADDR64:
4488 if (opd_sym_map != NULL
4489 && rel + 1 < rel_end
4490 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4494 if (h->root.root.string[0] == '.'
4495 && h->root.root.string[1] != 0
4496 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4499 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4505 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4510 opd_sym_map[rel->r_offset / 8] = s;
4518 case R_PPC64_ADDR14:
4519 case R_PPC64_ADDR14_BRNTAKEN:
4520 case R_PPC64_ADDR14_BRTAKEN:
4521 case R_PPC64_ADDR16:
4522 case R_PPC64_ADDR16_DS:
4523 case R_PPC64_ADDR16_HA:
4524 case R_PPC64_ADDR16_HI:
4525 case R_PPC64_ADDR16_HIGHER:
4526 case R_PPC64_ADDR16_HIGHERA:
4527 case R_PPC64_ADDR16_HIGHEST:
4528 case R_PPC64_ADDR16_HIGHESTA:
4529 case R_PPC64_ADDR16_LO:
4530 case R_PPC64_ADDR16_LO_DS:
4531 case R_PPC64_ADDR24:
4532 case R_PPC64_ADDR32:
4533 case R_PPC64_UADDR16:
4534 case R_PPC64_UADDR32:
4535 case R_PPC64_UADDR64:
4537 if (h != NULL && !info->shared)
4538 /* We may need a copy reloc. */
4541 /* Don't propagate .opd relocs. */
4542 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4545 /* If we are creating a shared library, and this is a reloc
4546 against a global symbol, or a non PC relative reloc
4547 against a local symbol, then we need to copy the reloc
4548 into the shared library. However, if we are linking with
4549 -Bsymbolic, we do not need to copy a reloc against a
4550 global symbol which is defined in an object we are
4551 including in the link (i.e., DEF_REGULAR is set). At
4552 this point we have not seen all the input files, so it is
4553 possible that DEF_REGULAR is not set now but will be set
4554 later (it is never cleared). In case of a weak definition,
4555 DEF_REGULAR may be cleared later by a strong definition in
4556 a shared library. We account for that possibility below by
4557 storing information in the dyn_relocs field of the hash
4558 table entry. A similar situation occurs when creating
4559 shared libraries and symbol visibility changes render the
4562 If on the other hand, we are creating an executable, we
4563 may need to keep relocations for symbols satisfied by a
4564 dynamic library if we manage to avoid copy relocs for the
4568 && (MUST_BE_DYN_RELOC (r_type)
4570 && (! info->symbolic
4571 || h->root.type == bfd_link_hash_defweak
4572 || !h->def_regular))))
4573 || (ELIMINATE_COPY_RELOCS
4576 && (h->root.type == bfd_link_hash_defweak
4577 || !h->def_regular)))
4579 struct ppc_dyn_relocs *p;
4580 struct ppc_dyn_relocs **head;
4582 /* We must copy these reloc types into the output file.
4583 Create a reloc section in dynobj and make room for
4590 name = (bfd_elf_string_from_elf_section
4592 elf_elfheader (abfd)->e_shstrndx,
4593 elf_section_data (sec)->rel_hdr.sh_name));
4597 if (strncmp (name, ".rela", 5) != 0
4598 || strcmp (bfd_get_section_name (abfd, sec),
4601 (*_bfd_error_handler)
4602 (_("%B: bad relocation section name `%s\'"),
4604 bfd_set_error (bfd_error_bad_value);
4607 dynobj = htab->elf.dynobj;
4608 sreloc = bfd_get_section_by_name (dynobj, name);
4613 sreloc = bfd_make_section (dynobj, name);
4614 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4615 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4616 if ((sec->flags & SEC_ALLOC) != 0)
4617 flags |= SEC_ALLOC | SEC_LOAD;
4619 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4620 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4623 elf_section_data (sec)->sreloc = sreloc;
4626 /* If this is a global symbol, we count the number of
4627 relocations we need for this symbol. */
4630 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4634 /* Track dynamic relocs needed for local syms too.
4635 We really need local syms available to do this
4639 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4644 head = ((struct ppc_dyn_relocs **)
4645 &elf_section_data (s)->local_dynrel);
4649 if (p == NULL || p->sec != sec)
4651 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4662 if (!MUST_BE_DYN_RELOC (r_type))
4675 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4676 of the code entry point, and its section. */
4679 opd_entry_value (asection *opd_sec,
4681 asection **code_sec,
4684 bfd *opd_bfd = opd_sec->owner;
4685 Elf_Internal_Rela *relocs;
4686 Elf_Internal_Rela *lo, *hi, *look;
4689 /* No relocs implies we are linking a --just-symbols object. */
4690 if (opd_sec->reloc_count == 0)
4694 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4695 return (bfd_vma) -1;
4697 if (code_sec != NULL)
4699 asection *sec, *likely = NULL;
4700 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4702 && (sec->flags & SEC_LOAD) != 0
4703 && (sec->flags & SEC_ALLOC) != 0)
4708 if (code_off != NULL)
4709 *code_off = val - likely->vma;
4715 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4717 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4719 /* Go find the opd reloc at the sym address. */
4721 BFD_ASSERT (lo != NULL);
4722 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4726 look = lo + (hi - lo) / 2;
4727 if (look->r_offset < offset)
4729 else if (look->r_offset > offset)
4733 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4734 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4735 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4737 unsigned long symndx = ELF64_R_SYM (look->r_info);
4740 if (symndx < symtab_hdr->sh_info)
4742 Elf_Internal_Sym *sym;
4744 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4747 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4748 symtab_hdr->sh_info,
4749 0, NULL, NULL, NULL);
4752 symtab_hdr->contents = (bfd_byte *) sym;
4756 val = sym->st_value;
4758 if ((sym->st_shndx != SHN_UNDEF
4759 && sym->st_shndx < SHN_LORESERVE)
4760 || sym->st_shndx > SHN_HIRESERVE)
4761 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4762 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4766 struct elf_link_hash_entry **sym_hashes;
4767 struct elf_link_hash_entry *rh;
4769 sym_hashes = elf_sym_hashes (opd_bfd);
4770 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4771 while (rh->root.type == bfd_link_hash_indirect
4772 || rh->root.type == bfd_link_hash_warning)
4773 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4774 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4775 || rh->root.type == bfd_link_hash_defweak);
4776 val = rh->root.u.def.value;
4777 sec = rh->root.u.def.section;
4779 val += look->r_addend;
4780 if (code_off != NULL)
4782 if (code_sec != NULL)
4784 if (sec != NULL && sec->output_section != NULL)
4785 val += sec->output_section->vma + sec->output_offset;
4794 /* Return the section that should be marked against GC for a given
4798 ppc64_elf_gc_mark_hook (asection *sec,
4799 struct bfd_link_info *info,
4800 Elf_Internal_Rela *rel,
4801 struct elf_link_hash_entry *h,
4802 Elf_Internal_Sym *sym)
4806 /* First mark all our entry sym sections. */
4807 if (info->gc_sym_list != NULL)
4809 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4810 struct bfd_sym_chain *sym = info->gc_sym_list;
4812 info->gc_sym_list = NULL;
4815 struct ppc_link_hash_entry *eh;
4817 eh = (struct ppc_link_hash_entry *)
4818 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4821 if (eh->elf.root.type != bfd_link_hash_defined
4822 && eh->elf.root.type != bfd_link_hash_defweak)
4825 if (eh->is_func_descriptor)
4826 rsec = eh->oh->elf.root.u.def.section;
4827 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4828 && opd_entry_value (eh->elf.root.u.def.section,
4829 eh->elf.root.u.def.value,
4830 &rsec, NULL) != (bfd_vma) -1)
4836 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4838 rsec = eh->elf.root.u.def.section;
4840 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4844 while (sym != NULL);
4847 /* Syms return NULL if we're marking .opd, so we avoid marking all
4848 function sections, as all functions are referenced in .opd. */
4850 if (get_opd_info (sec) != NULL)
4855 enum elf_ppc64_reloc_type r_type;
4856 struct ppc_link_hash_entry *eh;
4858 r_type = ELF64_R_TYPE (rel->r_info);
4861 case R_PPC64_GNU_VTINHERIT:
4862 case R_PPC64_GNU_VTENTRY:
4866 switch (h->root.type)
4868 case bfd_link_hash_defined:
4869 case bfd_link_hash_defweak:
4870 eh = (struct ppc_link_hash_entry *) h;
4871 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4874 /* Function descriptor syms cause the associated
4875 function code sym section to be marked. */
4876 if (eh->is_func_descriptor)
4878 /* They also mark their opd section. */
4879 if (!eh->elf.root.u.def.section->gc_mark)
4880 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4881 ppc64_elf_gc_mark_hook);
4883 rsec = eh->oh->elf.root.u.def.section;
4885 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4886 && opd_entry_value (eh->elf.root.u.def.section,
4887 eh->elf.root.u.def.value,
4888 &rsec, NULL) != (bfd_vma) -1)
4890 if (!eh->elf.root.u.def.section->gc_mark)
4891 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4892 ppc64_elf_gc_mark_hook);
4895 rsec = h->root.u.def.section;
4898 case bfd_link_hash_common:
4899 rsec = h->root.u.c.p->section;
4909 asection **opd_sym_section;
4911 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4912 opd_sym_section = get_opd_info (rsec);
4913 if (opd_sym_section != NULL)
4916 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4918 rsec = opd_sym_section[sym->st_value / 8];
4925 /* Update the .got, .plt. and dynamic reloc reference counts for the
4926 section being removed. */
4929 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4930 asection *sec, const Elf_Internal_Rela *relocs)
4932 struct ppc_link_hash_table *htab;
4933 Elf_Internal_Shdr *symtab_hdr;
4934 struct elf_link_hash_entry **sym_hashes;
4935 struct got_entry **local_got_ents;
4936 const Elf_Internal_Rela *rel, *relend;
4938 if ((sec->flags & SEC_ALLOC) == 0)
4941 elf_section_data (sec)->local_dynrel = NULL;
4943 htab = ppc_hash_table (info);
4944 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4945 sym_hashes = elf_sym_hashes (abfd);
4946 local_got_ents = elf_local_got_ents (abfd);
4948 relend = relocs + sec->reloc_count;
4949 for (rel = relocs; rel < relend; rel++)
4951 unsigned long r_symndx;
4952 enum elf_ppc64_reloc_type r_type;
4953 struct elf_link_hash_entry *h = NULL;
4956 r_symndx = ELF64_R_SYM (rel->r_info);
4957 r_type = ELF64_R_TYPE (rel->r_info);
4958 if (r_symndx >= symtab_hdr->sh_info)
4960 struct ppc_link_hash_entry *eh;
4961 struct ppc_dyn_relocs **pp;
4962 struct ppc_dyn_relocs *p;
4964 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4965 while (h->root.type == bfd_link_hash_indirect
4966 || h->root.type == bfd_link_hash_warning)
4967 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4968 eh = (struct ppc_link_hash_entry *) h;
4970 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4973 /* Everything must go for SEC. */
4981 case R_PPC64_GOT_TLSLD16:
4982 case R_PPC64_GOT_TLSLD16_LO:
4983 case R_PPC64_GOT_TLSLD16_HI:
4984 case R_PPC64_GOT_TLSLD16_HA:
4985 ppc64_tlsld_got (abfd)->refcount -= 1;
4986 tls_type = TLS_TLS | TLS_LD;
4989 case R_PPC64_GOT_TLSGD16:
4990 case R_PPC64_GOT_TLSGD16_LO:
4991 case R_PPC64_GOT_TLSGD16_HI:
4992 case R_PPC64_GOT_TLSGD16_HA:
4993 tls_type = TLS_TLS | TLS_GD;
4996 case R_PPC64_GOT_TPREL16_DS:
4997 case R_PPC64_GOT_TPREL16_LO_DS:
4998 case R_PPC64_GOT_TPREL16_HI:
4999 case R_PPC64_GOT_TPREL16_HA:
5000 tls_type = TLS_TLS | TLS_TPREL;
5003 case R_PPC64_GOT_DTPREL16_DS:
5004 case R_PPC64_GOT_DTPREL16_LO_DS:
5005 case R_PPC64_GOT_DTPREL16_HI:
5006 case R_PPC64_GOT_DTPREL16_HA:
5007 tls_type = TLS_TLS | TLS_DTPREL;
5011 case R_PPC64_GOT16_DS:
5012 case R_PPC64_GOT16_HA:
5013 case R_PPC64_GOT16_HI:
5014 case R_PPC64_GOT16_LO:
5015 case R_PPC64_GOT16_LO_DS:
5018 struct got_entry *ent;
5023 ent = local_got_ents[r_symndx];
5025 for (; ent != NULL; ent = ent->next)
5026 if (ent->addend == rel->r_addend
5027 && ent->owner == abfd
5028 && ent->tls_type == tls_type)
5032 if (ent->got.refcount > 0)
5033 ent->got.refcount -= 1;
5037 case R_PPC64_PLT16_HA:
5038 case R_PPC64_PLT16_HI:
5039 case R_PPC64_PLT16_LO:
5043 case R_PPC64_REL14_BRNTAKEN:
5044 case R_PPC64_REL14_BRTAKEN:
5048 struct plt_entry *ent;
5050 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5051 if (ent->addend == rel->r_addend)
5055 if (ent->plt.refcount > 0)
5056 ent->plt.refcount -= 1;
5067 /* The maximum size of .sfpr. */
5068 #define SFPR_MAX (218*4)
5070 struct sfpr_def_parms
5072 const char name[12];
5073 unsigned char lo, hi;
5074 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5075 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5078 /* Auto-generate _save*, _rest* functions in .sfpr. */
5081 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5083 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5085 size_t len = strlen (parm->name);
5086 bfd_boolean writing = FALSE;
5089 memcpy (sym, parm->name, len);
5092 for (i = parm->lo; i <= parm->hi; i++)
5094 struct elf_link_hash_entry *h;
5096 sym[len + 0] = i / 10 + '0';
5097 sym[len + 1] = i % 10 + '0';
5098 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5102 h->root.type = bfd_link_hash_defined;
5103 h->root.u.def.section = htab->sfpr;
5104 h->root.u.def.value = htab->sfpr->size;
5107 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5109 if (htab->sfpr->contents == NULL)
5111 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5112 if (htab->sfpr->contents == NULL)
5118 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5120 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5122 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5123 htab->sfpr->size = p - htab->sfpr->contents;
5131 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5133 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5138 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5140 p = savegpr0 (abfd, p, r);
5141 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5143 bfd_put_32 (abfd, BLR, p);
5148 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5150 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5155 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5157 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5159 p = restgpr0 (abfd, p, r);
5160 bfd_put_32 (abfd, MTLR_R0, p);
5164 p = restgpr0 (abfd, p, 30);
5165 p = restgpr0 (abfd, p, 31);
5167 bfd_put_32 (abfd, BLR, p);
5172 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5174 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5179 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5181 p = savegpr1 (abfd, p, r);
5182 bfd_put_32 (abfd, BLR, p);
5187 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5189 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5194 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5196 p = restgpr1 (abfd, p, r);
5197 bfd_put_32 (abfd, BLR, p);
5202 savefpr (bfd *abfd, bfd_byte *p, int r)
5204 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5209 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5211 p = savefpr (abfd, p, r);
5212 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5214 bfd_put_32 (abfd, BLR, p);
5219 restfpr (bfd *abfd, bfd_byte *p, int r)
5221 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5226 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5228 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5230 p = restfpr (abfd, p, r);
5231 bfd_put_32 (abfd, MTLR_R0, p);
5235 p = restfpr (abfd, p, 30);
5236 p = restfpr (abfd, p, 31);
5238 bfd_put_32 (abfd, BLR, p);
5243 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5245 p = savefpr (abfd, p, r);
5246 bfd_put_32 (abfd, BLR, p);
5251 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5253 p = restfpr (abfd, p, r);
5254 bfd_put_32 (abfd, BLR, p);
5259 savevr (bfd *abfd, bfd_byte *p, int r)
5261 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5263 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5268 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5270 p = savevr (abfd, p, r);
5271 bfd_put_32 (abfd, BLR, p);
5276 restvr (bfd *abfd, bfd_byte *p, int r)
5278 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5280 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5285 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5287 p = restvr (abfd, p, r);
5288 bfd_put_32 (abfd, BLR, p);
5292 /* Called via elf_link_hash_traverse to transfer dynamic linking
5293 information on function code symbol entries to their corresponding
5294 function descriptor symbol entries. */
5297 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5299 struct bfd_link_info *info;
5300 struct ppc_link_hash_table *htab;
5301 struct plt_entry *ent;
5302 struct ppc_link_hash_entry *fh;
5303 struct ppc_link_hash_entry *fdh;
5304 bfd_boolean force_local;
5306 fh = (struct ppc_link_hash_entry *) h;
5307 if (fh->elf.root.type == bfd_link_hash_indirect)
5310 if (fh->elf.root.type == bfd_link_hash_warning)
5311 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5314 htab = ppc_hash_table (info);
5316 /* Resolve undefined references to dot-symbols as the value
5317 in the function descriptor, if we have one in a regular object.
5318 This is to satisfy cases like ".quad .foo". Calls to functions
5319 in dynamic objects are handled elsewhere. */
5320 if (fh->elf.root.type == bfd_link_hash_undefweak
5321 && fh->was_undefined
5322 && (fh->oh->elf.root.type == bfd_link_hash_defined
5323 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5324 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5325 && opd_entry_value (fh->oh->elf.root.u.def.section,
5326 fh->oh->elf.root.u.def.value,
5327 &fh->elf.root.u.def.section,
5328 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5330 fh->elf.root.type = fh->oh->elf.root.type;
5331 fh->elf.forced_local = 1;
5334 /* If this is a function code symbol, transfer dynamic linking
5335 information to the function descriptor symbol. */
5339 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5340 if (ent->plt.refcount > 0)
5343 || fh->elf.root.root.string[0] != '.'
5344 || fh->elf.root.root.string[1] == '\0')
5347 /* Find the corresponding function descriptor symbol. Create it
5348 as undefined if necessary. */
5350 fdh = get_fdh (fh, htab);
5352 while (fdh->elf.root.type == bfd_link_hash_indirect
5353 || fdh->elf.root.type == bfd_link_hash_warning)
5354 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5358 && (fh->elf.root.type == bfd_link_hash_undefined
5359 || fh->elf.root.type == bfd_link_hash_undefweak))
5363 struct bfd_link_hash_entry *bh;
5365 abfd = fh->elf.root.u.undef.abfd;
5366 newsym = bfd_make_empty_symbol (abfd);
5367 newsym->name = fh->elf.root.root.string + 1;
5368 newsym->section = bfd_und_section_ptr;
5370 newsym->flags = BSF_OBJECT;
5371 if (fh->elf.root.type == bfd_link_hash_undefweak)
5372 newsym->flags |= BSF_WEAK;
5374 bh = &fdh->elf.root;
5375 if ( !(_bfd_generic_link_add_one_symbol
5376 (info, abfd, newsym->name, newsym->flags,
5377 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
5381 fdh = (struct ppc_link_hash_entry *) bh;
5382 fdh->elf.non_elf = 0;
5384 fdh->elf.type = STT_OBJECT;
5388 && !fdh->elf.forced_local
5390 || fdh->elf.def_dynamic
5391 || fdh->elf.ref_dynamic
5392 || (fdh->elf.root.type == bfd_link_hash_undefweak
5393 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5395 if (fdh->elf.dynindx == -1)
5396 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5398 fdh->elf.ref_regular |= fh->elf.ref_regular;
5399 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5400 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5401 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5402 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5404 struct plt_entry **ep = &fdh->elf.plt.plist;
5407 *ep = fh->elf.plt.plist;
5408 fh->elf.plt.plist = NULL;
5409 fdh->elf.needs_plt = 1;
5411 fdh->is_func_descriptor = 1;
5416 /* Now that the info is on the function descriptor, clear the
5417 function code sym info. Any function code syms for which we
5418 don't have a definition in a regular file, we force local.
5419 This prevents a shared library from exporting syms that have
5420 been imported from another library. Function code syms that
5421 are really in the library we must leave global to prevent the
5422 linker dragging in a definition from a static library. */
5425 && (!fh->elf.def_regular
5427 || !fdh->elf.def_regular
5428 || fdh->elf.forced_local));
5429 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5434 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5435 this hook to a) provide some gcc support functions, and b) transfer
5436 dynamic linking information gathered so far on function code symbol
5437 entries, to their corresponding function descriptor symbol entries. */
5440 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5441 struct bfd_link_info *info)
5443 struct ppc_link_hash_table *htab;
5445 const struct sfpr_def_parms funcs[] =
5447 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5448 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5449 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5450 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5451 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5452 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5453 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5454 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5455 { "._savef", 14, 31, savefpr, savefpr1_tail },
5456 { "._restf", 14, 31, restfpr, restfpr1_tail },
5457 { "_savevr_", 20, 31, savevr, savevr_tail },
5458 { "_restvr_", 20, 31, restvr, restvr_tail }
5461 htab = ppc_hash_table (info);
5462 if (htab->sfpr == NULL)
5463 /* We don't have any relocs. */
5466 /* Provide any missing _save* and _rest* functions. */
5467 htab->sfpr->size = 0;
5468 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5469 if (!sfpr_define (info, &funcs[i]))
5472 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5474 if (htab->sfpr->size == 0)
5475 _bfd_strip_section_from_output (info, htab->sfpr);
5480 /* Adjust a symbol defined by a dynamic object and referenced by a
5481 regular object. The current definition is in some section of the
5482 dynamic object, but we're not including those sections. We have to
5483 change the definition to something the rest of the link can
5487 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5488 struct elf_link_hash_entry *h)
5490 struct ppc_link_hash_table *htab;
5492 unsigned int power_of_two;
5494 htab = ppc_hash_table (info);
5496 /* Deal with function syms. */
5497 if (h->type == STT_FUNC
5500 /* Clear procedure linkage table information for any symbol that
5501 won't need a .plt entry. */
5502 struct plt_entry *ent;
5503 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5504 if (ent->plt.refcount > 0)
5507 || SYMBOL_CALLS_LOCAL (info, h)
5508 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5509 && h->root.type == bfd_link_hash_undefweak))
5511 h->plt.plist = NULL;
5516 h->plt.plist = NULL;
5518 /* If this is a weak symbol, and there is a real definition, the
5519 processor independent code will have arranged for us to see the
5520 real definition first, and we can just use the same value. */
5521 if (h->u.weakdef != NULL)
5523 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5524 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5525 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5526 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5527 if (ELIMINATE_COPY_RELOCS)
5528 h->non_got_ref = h->u.weakdef->non_got_ref;
5532 /* If we are creating a shared library, we must presume that the
5533 only references to the symbol are via the global offset table.
5534 For such cases we need not do anything here; the relocations will
5535 be handled correctly by relocate_section. */
5539 /* If there are no references to this symbol that do not use the
5540 GOT, we don't need to generate a copy reloc. */
5541 if (!h->non_got_ref)
5544 if (ELIMINATE_COPY_RELOCS)
5546 struct ppc_link_hash_entry * eh;
5547 struct ppc_dyn_relocs *p;
5549 eh = (struct ppc_link_hash_entry *) h;
5550 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5552 s = p->sec->output_section;
5553 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5557 /* If we didn't find any dynamic relocs in read-only sections, then
5558 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5566 if (h->plt.plist != NULL)
5568 /* We should never get here, but unfortunately there are versions
5569 of gcc out there that improperly (for this ABI) put initialized
5570 function pointers, vtable refs and suchlike in read-only
5571 sections. Allow them to proceed, but warn that this might
5572 break at runtime. */
5573 (*_bfd_error_handler)
5574 (_("copy reloc against `%s' requires lazy plt linking; "
5575 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5576 h->root.root.string);
5579 /* This is a reference to a symbol defined by a dynamic object which
5580 is not a function. */
5582 /* We must allocate the symbol in our .dynbss section, which will
5583 become part of the .bss section of the executable. There will be
5584 an entry for this symbol in the .dynsym section. The dynamic
5585 object will contain position independent code, so all references
5586 from the dynamic object to this symbol will go through the global
5587 offset table. The dynamic linker will use the .dynsym entry to
5588 determine the address it must put in the global offset table, so
5589 both the dynamic object and the regular object will refer to the
5590 same memory location for the variable. */
5592 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5593 to copy the initial value out of the dynamic object and into the
5594 runtime process image. We need to remember the offset into the
5595 .rela.bss section we are going to use. */
5596 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5598 htab->relbss->size += sizeof (Elf64_External_Rela);
5602 /* We need to figure out the alignment required for this symbol. I
5603 have no idea how ELF linkers handle this. */
5604 power_of_two = bfd_log2 (h->size);
5605 if (power_of_two > 4)
5608 /* Apply the required alignment. */
5610 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5611 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5613 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5617 /* Define the symbol as being at this point in the section. */
5618 h->root.u.def.section = s;
5619 h->root.u.def.value = s->size;
5621 /* Increment the section size to make room for the symbol. */
5627 /* If given a function descriptor symbol, hide both the function code
5628 sym and the descriptor. */
5630 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5631 struct elf_link_hash_entry *h,
5632 bfd_boolean force_local)
5634 struct ppc_link_hash_entry *eh;
5635 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5637 eh = (struct ppc_link_hash_entry *) h;
5638 if (eh->is_func_descriptor)
5640 struct ppc_link_hash_entry *fh = eh->oh;
5645 struct ppc_link_hash_table *htab;
5648 /* We aren't supposed to use alloca in BFD because on
5649 systems which do not have alloca the version in libiberty
5650 calls xmalloc, which might cause the program to crash
5651 when it runs out of memory. This function doesn't have a
5652 return status, so there's no way to gracefully return an
5653 error. So cheat. We know that string[-1] can be safely
5654 accessed; It's either a string in an ELF string table,
5655 or allocated in an objalloc structure. */
5657 p = eh->elf.root.root.string - 1;
5660 htab = ppc_hash_table (info);
5661 fh = (struct ppc_link_hash_entry *)
5662 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5665 /* Unfortunately, if it so happens that the string we were
5666 looking for was allocated immediately before this string,
5667 then we overwrote the string terminator. That's the only
5668 reason the lookup should fail. */
5671 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5672 while (q >= eh->elf.root.root.string && *q == *p)
5674 if (q < eh->elf.root.root.string && *p == '.')
5675 fh = (struct ppc_link_hash_entry *)
5676 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5685 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5690 get_sym_h (struct elf_link_hash_entry **hp,
5691 Elf_Internal_Sym **symp,
5694 Elf_Internal_Sym **locsymsp,
5695 unsigned long r_symndx,
5698 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5700 if (r_symndx >= symtab_hdr->sh_info)
5702 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5703 struct elf_link_hash_entry *h;
5705 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5706 while (h->root.type == bfd_link_hash_indirect
5707 || h->root.type == bfd_link_hash_warning)
5708 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5716 if (symsecp != NULL)
5718 asection *symsec = NULL;
5719 if (h->root.type == bfd_link_hash_defined
5720 || h->root.type == bfd_link_hash_defweak)
5721 symsec = h->root.u.def.section;
5725 if (tls_maskp != NULL)
5727 struct ppc_link_hash_entry *eh;
5729 eh = (struct ppc_link_hash_entry *) h;
5730 *tls_maskp = &eh->tls_mask;
5735 Elf_Internal_Sym *sym;
5736 Elf_Internal_Sym *locsyms = *locsymsp;
5738 if (locsyms == NULL)
5740 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5741 if (locsyms == NULL)
5742 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5743 symtab_hdr->sh_info,
5744 0, NULL, NULL, NULL);
5745 if (locsyms == NULL)
5747 *locsymsp = locsyms;
5749 sym = locsyms + r_symndx;
5757 if (symsecp != NULL)
5759 asection *symsec = NULL;
5760 if ((sym->st_shndx != SHN_UNDEF
5761 && sym->st_shndx < SHN_LORESERVE)
5762 || sym->st_shndx > SHN_HIRESERVE)
5763 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5767 if (tls_maskp != NULL)
5769 struct got_entry **lgot_ents;
5773 lgot_ents = elf_local_got_ents (ibfd);
5774 if (lgot_ents != NULL)
5776 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5777 tls_mask = &lgot_masks[r_symndx];
5779 *tls_maskp = tls_mask;
5785 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5786 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5787 type suitable for optimization, and 1 otherwise. */
5790 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5791 Elf_Internal_Sym **locsymsp,
5792 const Elf_Internal_Rela *rel, bfd *ibfd)
5794 unsigned long r_symndx;
5796 struct elf_link_hash_entry *h;
5797 Elf_Internal_Sym *sym;
5801 r_symndx = ELF64_R_SYM (rel->r_info);
5802 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5805 if ((*tls_maskp != NULL && **tls_maskp != 0)
5807 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5810 /* Look inside a TOC section too. */
5813 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5814 off = h->root.u.def.value;
5817 off = sym->st_value;
5818 off += rel->r_addend;
5819 BFD_ASSERT (off % 8 == 0);
5820 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5821 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5822 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5824 if (toc_symndx != NULL)
5825 *toc_symndx = r_symndx;
5827 || ((h->root.type == bfd_link_hash_defined
5828 || h->root.type == bfd_link_hash_defweak)
5829 && !h->def_dynamic))
5830 && (next_r == -1 || next_r == -2))
5835 /* Adjust all global syms defined in opd sections. In gcc generated
5836 code for the old ABI, these will already have been done. */
5839 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5841 struct ppc_link_hash_entry *eh;
5845 if (h->root.type == bfd_link_hash_indirect)
5848 if (h->root.type == bfd_link_hash_warning)
5849 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5851 if (h->root.type != bfd_link_hash_defined
5852 && h->root.type != bfd_link_hash_defweak)
5855 eh = (struct ppc_link_hash_entry *) h;
5856 if (eh->adjust_done)
5859 sym_sec = eh->elf.root.u.def.section;
5860 opd_adjust = get_opd_info (sym_sec);
5861 if (opd_adjust != NULL)
5863 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5866 /* This entry has been deleted. */
5867 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5870 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5871 if (elf_discarded_section (dsec))
5873 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5877 eh->elf.root.u.def.value = 0;
5878 eh->elf.root.u.def.section = dsec;
5881 eh->elf.root.u.def.value += adjust;
5882 eh->adjust_done = 1;
5887 /* Remove unused Official Procedure Descriptor entries. Currently we
5888 only remove those associated with functions in discarded link-once
5889 sections, or weakly defined functions that have been overridden. It
5890 would be possible to remove many more entries for statically linked
5894 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5895 bfd_boolean non_overlapping)
5898 bfd_boolean some_edited = FALSE;
5899 asection *need_pad = NULL;
5901 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5904 Elf_Internal_Rela *relstart, *rel, *relend;
5905 Elf_Internal_Shdr *symtab_hdr;
5906 Elf_Internal_Sym *local_syms;
5907 struct elf_link_hash_entry **sym_hashes;
5911 bfd_boolean need_edit, add_aux_fields;
5912 bfd_size_type cnt_16b = 0;
5914 sec = bfd_get_section_by_name (ibfd, ".opd");
5918 amt = sec->size * sizeof (long) / 8;
5919 opd_adjust = get_opd_info (sec);
5920 if (opd_adjust == NULL)
5922 /* check_relocs hasn't been called. Must be a ld -r link
5923 or --just-symbols object. */
5924 opd_adjust = bfd_zalloc (obfd, amt);
5925 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5927 memset (opd_adjust, 0, amt);
5929 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
5932 if (sec->output_section == bfd_abs_section_ptr)
5935 /* Look through the section relocs. */
5936 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5940 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5941 sym_hashes = elf_sym_hashes (ibfd);
5943 /* Read the relocations. */
5944 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5946 if (relstart == NULL)
5949 /* First run through the relocs to check they are sane, and to
5950 determine whether we need to edit this opd section. */
5954 relend = relstart + sec->reloc_count;
5955 for (rel = relstart; rel < relend; )
5957 enum elf_ppc64_reloc_type r_type;
5958 unsigned long r_symndx;
5960 struct elf_link_hash_entry *h;
5961 Elf_Internal_Sym *sym;
5963 /* .opd contains a regular array of 16 or 24 byte entries. We're
5964 only interested in the reloc pointing to a function entry
5966 if (rel->r_offset != offset
5967 || rel + 1 >= relend
5968 || (rel + 1)->r_offset != offset + 8)
5970 /* If someone messes with .opd alignment then after a
5971 "ld -r" we might have padding in the middle of .opd.
5972 Also, there's nothing to prevent someone putting
5973 something silly in .opd with the assembler. No .opd
5974 optimization for them! */
5976 (*_bfd_error_handler)
5977 (_("%B: .opd is not a regular array of opd entries"), ibfd);
5982 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5983 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5985 (*_bfd_error_handler)
5986 (_("%B: unexpected reloc type %u in .opd section"),
5992 r_symndx = ELF64_R_SYM (rel->r_info);
5993 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5997 if (sym_sec == NULL || sym_sec->owner == NULL)
5999 const char *sym_name;
6001 sym_name = h->root.root.string;
6003 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym);
6005 (*_bfd_error_handler)
6006 (_("%B: undefined sym `%s' in .opd section"),
6012 /* opd entries are always for functions defined in the
6013 current input bfd. If the symbol isn't defined in the
6014 input bfd, then we won't be using the function in this
6015 bfd; It must be defined in a linkonce section in another
6016 bfd, or is weak. It's also possible that we are
6017 discarding the function due to a linker script /DISCARD/,
6018 which we test for via the output_section. */
6019 if (sym_sec->owner != ibfd
6020 || sym_sec->output_section == bfd_abs_section_ptr)
6025 || (rel + 1 == relend && rel->r_offset == offset + 16))
6027 if (sec->size == offset + 24)
6032 if (rel == relend && sec->size == offset + 16)
6040 if (rel->r_offset == offset + 24)
6042 else if (rel->r_offset != offset + 16)
6044 else if (rel + 1 < relend
6045 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6046 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6051 else if (rel + 2 < relend
6052 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6053 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6062 add_aux_fields = non_overlapping && cnt_16b > 0;
6064 if (need_edit || add_aux_fields)
6066 Elf_Internal_Rela *write_rel;
6067 bfd_byte *rptr, *wptr;
6068 bfd_byte *new_contents = NULL;
6072 /* This seems a waste of time as input .opd sections are all
6073 zeros as generated by gcc, but I suppose there's no reason
6074 this will always be so. We might start putting something in
6075 the third word of .opd entries. */
6076 if ((sec->flags & SEC_IN_MEMORY) == 0)
6079 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6084 if (local_syms != NULL
6085 && symtab_hdr->contents != (unsigned char *) local_syms)
6087 if (elf_section_data (sec)->relocs != relstart)
6091 sec->contents = loc;
6092 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6095 elf_section_data (sec)->relocs = relstart;
6097 wptr = sec->contents;
6098 rptr = sec->contents;
6099 new_contents = sec->contents;
6103 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6104 if (new_contents == NULL)
6107 wptr = new_contents;
6110 write_rel = relstart;
6114 for (rel = relstart; rel < relend; rel++)
6116 unsigned long r_symndx;
6118 struct elf_link_hash_entry *h;
6119 Elf_Internal_Sym *sym;
6121 r_symndx = ELF64_R_SYM (rel->r_info);
6122 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6126 if (rel->r_offset == offset)
6128 struct ppc_link_hash_entry *fdh = NULL;
6130 /* See if the .opd entry is full 24 byte or
6131 16 byte (with fd_aux entry overlapped with next
6134 if ((rel + 2 == relend && sec->size == offset + 16)
6135 || (rel + 3 < relend
6136 && rel[2].r_offset == offset + 16
6137 && rel[3].r_offset == offset + 24
6138 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6139 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6143 && h->root.root.string[0] == '.')
6144 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6145 ppc_hash_table (info));
6147 skip = (sym_sec->owner != ibfd
6148 || sym_sec->output_section == bfd_abs_section_ptr);
6151 if (fdh != NULL && sym_sec->owner == ibfd)
6153 /* Arrange for the function descriptor sym
6155 fdh->elf.root.u.def.value = 0;
6156 fdh->elf.root.u.def.section = sym_sec;
6158 opd_adjust[rel->r_offset / 8] = -1;
6162 /* We'll be keeping this opd entry. */
6166 /* Redefine the function descriptor symbol to
6167 this location in the opd section. It is
6168 necessary to update the value here rather
6169 than using an array of adjustments as we do
6170 for local symbols, because various places
6171 in the generic ELF code use the value
6172 stored in u.def.value. */
6173 fdh->elf.root.u.def.value = wptr - new_contents;
6174 fdh->adjust_done = 1;
6177 /* Local syms are a bit tricky. We could
6178 tweak them as they can be cached, but
6179 we'd need to look through the local syms
6180 for the function descriptor sym which we
6181 don't have at the moment. So keep an
6182 array of adjustments. */
6183 opd_adjust[rel->r_offset / 8]
6184 = (wptr - new_contents) - (rptr - sec->contents);
6187 memcpy (wptr, rptr, opd_ent_size);
6188 wptr += opd_ent_size;
6189 if (add_aux_fields && opd_ent_size == 16)
6191 memset (wptr, '\0', 8);
6195 rptr += opd_ent_size;
6196 offset += opd_ent_size;
6201 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6204 /* We won't be needing dynamic relocs here. */
6205 struct ppc_dyn_relocs **pp;
6206 struct ppc_dyn_relocs *p;
6209 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6210 else if (sym_sec != NULL)
6211 pp = ((struct ppc_dyn_relocs **)
6212 &elf_section_data (sym_sec)->local_dynrel);
6214 pp = ((struct ppc_dyn_relocs **)
6215 &elf_section_data (sec)->local_dynrel);
6216 while ((p = *pp) != NULL)
6231 /* We need to adjust any reloc offsets to point to the
6232 new opd entries. While we're at it, we may as well
6233 remove redundant relocs. */
6234 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6235 if (write_rel != rel)
6236 memcpy (write_rel, rel, sizeof (*rel));
6241 sec->size = wptr - new_contents;
6242 sec->reloc_count = write_rel - relstart;
6245 free (sec->contents);
6246 sec->contents = new_contents;
6249 /* Fudge the size too, as this is used later in
6250 elf_bfd_final_link if we are emitting relocs. */
6251 elf_section_data (sec)->rel_hdr.sh_size
6252 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6253 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6256 else if (elf_section_data (sec)->relocs != relstart)
6259 if (local_syms != NULL
6260 && symtab_hdr->contents != (unsigned char *) local_syms)
6262 if (!info->keep_memory)
6265 symtab_hdr->contents = (unsigned char *) local_syms;
6270 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6272 /* If we are doing a final link and the last .opd entry is just 16 byte
6273 long, add a 8 byte padding after it. */
6274 if (need_pad != NULL && !info->relocatable)
6278 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6280 BFD_ASSERT (need_pad->size > 0);
6282 p = bfd_malloc (need_pad->size + 8);
6286 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6287 p, 0, need_pad->size))
6290 need_pad->contents = p;
6291 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6295 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6299 need_pad->contents = p;
6302 memset (need_pad->contents + need_pad->size, 0, 8);
6303 need_pad->size += 8;
6309 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6312 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6314 struct ppc_link_hash_table *htab;
6316 htab = ppc_hash_table (info);
6317 if (htab->tls_get_addr != NULL)
6319 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6321 while (h->elf.root.type == bfd_link_hash_indirect
6322 || h->elf.root.type == bfd_link_hash_warning)
6323 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6325 htab->tls_get_addr = h;
6327 if (htab->tls_get_addr_fd == NULL
6329 && h->oh->is_func_descriptor)
6330 htab->tls_get_addr_fd = h->oh;
6333 if (htab->tls_get_addr_fd != NULL)
6335 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6337 while (h->elf.root.type == bfd_link_hash_indirect
6338 || h->elf.root.type == bfd_link_hash_warning)
6339 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6341 htab->tls_get_addr_fd = h;
6344 return _bfd_elf_tls_setup (obfd, info);
6347 /* Run through all the TLS relocs looking for optimization
6348 opportunities. The linker has been hacked (see ppc64elf.em) to do
6349 a preliminary section layout so that we know the TLS segment
6350 offsets. We can't optimize earlier because some optimizations need
6351 to know the tp offset, and we need to optimize before allocating
6352 dynamic relocations. */
6355 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6359 struct ppc_link_hash_table *htab;
6361 if (info->relocatable || info->shared)
6364 htab = ppc_hash_table (info);
6365 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6367 Elf_Internal_Sym *locsyms = NULL;
6369 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6370 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6372 Elf_Internal_Rela *relstart, *rel, *relend;
6373 int expecting_tls_get_addr;
6375 /* Read the relocations. */
6376 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6378 if (relstart == NULL)
6381 expecting_tls_get_addr = 0;
6382 relend = relstart + sec->reloc_count;
6383 for (rel = relstart; rel < relend; rel++)
6385 enum elf_ppc64_reloc_type r_type;
6386 unsigned long r_symndx;
6387 struct elf_link_hash_entry *h;
6388 Elf_Internal_Sym *sym;
6391 char tls_set, tls_clear, tls_type = 0;
6393 bfd_boolean ok_tprel, is_local;
6395 r_symndx = ELF64_R_SYM (rel->r_info);
6396 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6400 if (elf_section_data (sec)->relocs != relstart)
6403 && (elf_tdata (ibfd)->symtab_hdr.contents
6404 != (unsigned char *) locsyms))
6411 if (h->root.type != bfd_link_hash_defined
6412 && h->root.type != bfd_link_hash_defweak)
6414 value = h->root.u.def.value;
6417 /* Symbols referenced by TLS relocs must be of type
6418 STT_TLS. So no need for .opd local sym adjust. */
6419 value = sym->st_value;
6427 value += sym_sec->output_offset;
6428 value += sym_sec->output_section->vma;
6429 value -= htab->elf.tls_sec->vma;
6430 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6431 < (bfd_vma) 1 << 32);
6434 r_type = ELF64_R_TYPE (rel->r_info);
6437 case R_PPC64_GOT_TLSLD16:
6438 case R_PPC64_GOT_TLSLD16_LO:
6439 case R_PPC64_GOT_TLSLD16_HI:
6440 case R_PPC64_GOT_TLSLD16_HA:
6441 /* These relocs should never be against a symbol
6442 defined in a shared lib. Leave them alone if
6443 that turns out to be the case. */
6444 ppc64_tlsld_got (ibfd)->refcount -= 1;
6451 tls_type = TLS_TLS | TLS_LD;
6452 expecting_tls_get_addr = 1;
6455 case R_PPC64_GOT_TLSGD16:
6456 case R_PPC64_GOT_TLSGD16_LO:
6457 case R_PPC64_GOT_TLSGD16_HI:
6458 case R_PPC64_GOT_TLSGD16_HA:
6464 tls_set = TLS_TLS | TLS_TPRELGD;
6466 tls_type = TLS_TLS | TLS_GD;
6467 expecting_tls_get_addr = 1;
6470 case R_PPC64_GOT_TPREL16_DS:
6471 case R_PPC64_GOT_TPREL16_LO_DS:
6472 case R_PPC64_GOT_TPREL16_HI:
6473 case R_PPC64_GOT_TPREL16_HA:
6474 expecting_tls_get_addr = 0;
6479 tls_clear = TLS_TPREL;
6480 tls_type = TLS_TLS | TLS_TPREL;
6487 case R_PPC64_REL14_BRTAKEN:
6488 case R_PPC64_REL14_BRNTAKEN:
6491 && (h == &htab->tls_get_addr->elf
6492 || h == &htab->tls_get_addr_fd->elf))
6494 if (!expecting_tls_get_addr
6496 && ((ELF64_R_TYPE (rel[-1].r_info)
6498 || (ELF64_R_TYPE (rel[-1].r_info)
6499 == R_PPC64_TOC16_LO)))
6501 /* Check for toc tls entries. */
6505 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6509 if (toc_tls != NULL)
6510 expecting_tls_get_addr = retval > 1;
6513 if (expecting_tls_get_addr)
6515 struct plt_entry *ent;
6516 for (ent = h->plt.plist; ent; ent = ent->next)
6517 if (ent->addend == 0)
6519 if (ent->plt.refcount > 0)
6520 ent->plt.refcount -= 1;
6525 expecting_tls_get_addr = 0;
6528 case R_PPC64_TPREL64:
6529 expecting_tls_get_addr = 0;
6533 tls_set = TLS_EXPLICIT;
6534 tls_clear = TLS_TPREL;
6540 case R_PPC64_DTPMOD64:
6541 expecting_tls_get_addr = 0;
6542 if (rel + 1 < relend
6544 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6545 && rel[1].r_offset == rel->r_offset + 8)
6549 tls_set = TLS_EXPLICIT | TLS_GD;
6552 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6561 tls_set = TLS_EXPLICIT;
6567 expecting_tls_get_addr = 0;
6571 if ((tls_set & TLS_EXPLICIT) == 0)
6573 struct got_entry *ent;
6575 /* Adjust got entry for this reloc. */
6579 ent = elf_local_got_ents (ibfd)[r_symndx];
6581 for (; ent != NULL; ent = ent->next)
6582 if (ent->addend == rel->r_addend
6583 && ent->owner == ibfd
6584 && ent->tls_type == tls_type)
6591 /* We managed to get rid of a got entry. */
6592 if (ent->got.refcount > 0)
6593 ent->got.refcount -= 1;
6598 struct ppc_link_hash_entry * eh;
6599 struct ppc_dyn_relocs **pp;
6600 struct ppc_dyn_relocs *p;
6602 /* Adjust dynamic relocs. */
6603 eh = (struct ppc_link_hash_entry *) h;
6604 for (pp = &eh->dyn_relocs;
6609 /* If we got rid of a DTPMOD/DTPREL reloc
6610 pair then we'll lose one or two dyn
6612 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6621 *tls_mask |= tls_set;
6622 *tls_mask &= ~tls_clear;
6625 if (elf_section_data (sec)->relocs != relstart)
6630 && (elf_tdata (ibfd)->symtab_hdr.contents
6631 != (unsigned char *) locsyms))
6633 if (!info->keep_memory)
6636 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6642 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6643 the values of any global symbols in a toc section that has been
6644 edited. Globals in toc sections should be a rarity, so this function
6645 sets a flag if any are found in toc sections other than the one just
6646 edited, so that futher hash table traversals can be avoided. */
6648 struct adjust_toc_info
6651 unsigned long *skip;
6652 bfd_boolean global_toc_syms;
6656 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6658 struct ppc_link_hash_entry *eh;
6659 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6661 if (h->root.type == bfd_link_hash_indirect)
6664 if (h->root.type == bfd_link_hash_warning)
6665 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6667 if (h->root.type != bfd_link_hash_defined
6668 && h->root.type != bfd_link_hash_defweak)
6671 eh = (struct ppc_link_hash_entry *) h;
6672 if (eh->adjust_done)
6675 if (eh->elf.root.u.def.section == toc_inf->toc)
6677 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6678 if (skip != (unsigned long) -1)
6679 eh->elf.root.u.def.value -= skip;
6682 (*_bfd_error_handler)
6683 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6684 eh->elf.root.u.def.section = &bfd_abs_section;
6685 eh->elf.root.u.def.value = 0;
6687 eh->adjust_done = 1;
6689 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6690 toc_inf->global_toc_syms = TRUE;
6695 /* Examine all relocs referencing .toc sections in order to remove
6696 unused .toc entries. */
6699 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6702 struct adjust_toc_info toc_inf;
6704 toc_inf.global_toc_syms = TRUE;
6705 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6707 asection *toc, *sec;
6708 Elf_Internal_Shdr *symtab_hdr;
6709 Elf_Internal_Sym *local_syms;
6710 struct elf_link_hash_entry **sym_hashes;
6711 Elf_Internal_Rela *relstart, *rel, *wrel;
6712 unsigned long *skip, *drop;
6713 unsigned char *used;
6714 unsigned char *keep, last, some_unused;
6716 toc = bfd_get_section_by_name (ibfd, ".toc");
6718 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6719 || elf_discarded_section (toc))
6723 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6724 sym_hashes = elf_sym_hashes (ibfd);
6726 /* Look at sections dropped from the final link. */
6729 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6731 if (sec->reloc_count == 0
6732 || !elf_discarded_section (sec)
6733 || get_opd_info (sec)
6734 || (sec->flags & SEC_ALLOC) == 0
6735 || (sec->flags & SEC_DEBUGGING) != 0)
6738 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6739 if (relstart == NULL)
6742 /* Run through the relocs to see which toc entries might be
6744 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6746 enum elf_ppc64_reloc_type r_type;
6747 unsigned long r_symndx;
6749 struct elf_link_hash_entry *h;
6750 Elf_Internal_Sym *sym;
6753 r_type = ELF64_R_TYPE (rel->r_info);
6760 case R_PPC64_TOC16_LO:
6761 case R_PPC64_TOC16_HI:
6762 case R_PPC64_TOC16_HA:
6763 case R_PPC64_TOC16_DS:
6764 case R_PPC64_TOC16_LO_DS:
6768 r_symndx = ELF64_R_SYM (rel->r_info);
6769 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6777 val = h->root.u.def.value;
6779 val = sym->st_value;
6780 val += rel->r_addend;
6782 if (val >= toc->size)
6785 /* Anything in the toc ought to be aligned to 8 bytes.
6786 If not, don't mark as unused. */
6792 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6800 if (elf_section_data (sec)->relocs != relstart)
6807 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6811 if (local_syms != NULL
6812 && symtab_hdr->contents != (unsigned char *) local_syms)
6816 && elf_section_data (sec)->relocs != relstart)
6823 /* Now check all kept sections that might reference the toc. */
6824 for (sec = ibfd->sections;
6826 /* Check the toc itself last. */
6827 sec = (sec == toc ? NULL
6828 : sec->next == toc && sec->next->next ? sec->next->next
6829 : sec->next == NULL ? toc
6834 if (sec->reloc_count == 0
6835 || elf_discarded_section (sec)
6836 || get_opd_info (sec)
6837 || (sec->flags & SEC_ALLOC) == 0
6838 || (sec->flags & SEC_DEBUGGING) != 0)
6841 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
6842 if (relstart == NULL)
6845 /* Mark toc entries referenced as used. */
6848 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6850 enum elf_ppc64_reloc_type r_type;
6851 unsigned long r_symndx;
6853 struct elf_link_hash_entry *h;
6854 Elf_Internal_Sym *sym;
6857 r_type = ELF64_R_TYPE (rel->r_info);
6861 case R_PPC64_TOC16_LO:
6862 case R_PPC64_TOC16_HI:
6863 case R_PPC64_TOC16_HA:
6864 case R_PPC64_TOC16_DS:
6865 case R_PPC64_TOC16_LO_DS:
6866 /* In case we're taking addresses of toc entries. */
6867 case R_PPC64_ADDR64:
6874 r_symndx = ELF64_R_SYM (rel->r_info);
6875 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6886 val = h->root.u.def.value;
6888 val = sym->st_value;
6889 val += rel->r_addend;
6891 if (val >= toc->size)
6894 /* For the toc section, we only mark as used if
6895 this entry itself isn't unused. */
6898 && (used[rel->r_offset >> 3]
6899 || !skip[rel->r_offset >> 3]))
6900 /* Do all the relocs again, to catch reference
6909 /* Merge the used and skip arrays. Assume that TOC
6910 doublewords not appearing as either used or unused belong
6911 to to an entry more than one doubleword in size. */
6912 for (drop = skip, keep = used, last = 0, some_unused = 0;
6913 drop < skip + (toc->size + 7) / 8;
6934 bfd_byte *contents, *src;
6937 /* Shuffle the toc contents, and at the same time convert the
6938 skip array from booleans into offsets. */
6939 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
6942 elf_section_data (toc)->this_hdr.contents = contents;
6944 for (src = contents, off = 0, drop = skip;
6945 src < contents + toc->size;
6950 *drop = (unsigned long) -1;
6956 memcpy (src - off, src, 8);
6959 toc->rawsize = toc->size;
6960 toc->size = src - contents - off;
6962 /* Read toc relocs. */
6963 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, TRUE);
6964 if (relstart == NULL)
6967 /* Remove unused toc relocs, and adjust those we keep. */
6969 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
6970 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
6972 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
6973 wrel->r_info = rel->r_info;
6974 wrel->r_addend = rel->r_addend;
6977 toc->reloc_count = wrel - relstart;
6978 elf_section_data (toc)->rel_hdr.sh_size
6979 = toc->reloc_count * elf_section_data (toc)->rel_hdr.sh_entsize;
6980 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
6982 /* Adjust addends for relocs against the toc section sym. */
6983 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6985 if (sec->reloc_count == 0
6986 || elf_discarded_section (sec))
6989 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6991 if (relstart == NULL)
6994 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6996 enum elf_ppc64_reloc_type r_type;
6997 unsigned long r_symndx;
6999 struct elf_link_hash_entry *h;
7000 Elf_Internal_Sym *sym;
7002 r_type = ELF64_R_TYPE (rel->r_info);
7009 case R_PPC64_TOC16_LO:
7010 case R_PPC64_TOC16_HI:
7011 case R_PPC64_TOC16_HA:
7012 case R_PPC64_TOC16_DS:
7013 case R_PPC64_TOC16_LO_DS:
7014 case R_PPC64_ADDR64:
7018 r_symndx = ELF64_R_SYM (rel->r_info);
7019 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7023 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7026 rel->r_addend -= skip[rel->r_addend >> 3];
7030 /* We shouldn't have local or global symbols defined in the TOC,
7031 but handle them anyway. */
7032 if (local_syms != NULL)
7034 Elf_Internal_Sym *sym;
7036 for (sym = local_syms;
7037 sym < local_syms + symtab_hdr->sh_info;
7039 if (sym->st_shndx != SHN_UNDEF
7040 && (sym->st_shndx < SHN_LORESERVE
7041 || sym->st_shndx > SHN_HIRESERVE)
7042 && sym->st_value != 0
7043 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7045 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7046 sym->st_value -= skip[sym->st_value >> 3];
7049 (*_bfd_error_handler)
7050 (_("%s defined in removed toc entry"),
7051 bfd_elf_sym_name (ibfd, symtab_hdr, sym));
7053 sym->st_shndx = SHN_ABS;
7055 symtab_hdr->contents = (unsigned char *) local_syms;
7059 /* Finally, adjust any global syms defined in the toc. */
7060 if (toc_inf.global_toc_syms)
7063 toc_inf.skip = skip;
7064 toc_inf.global_toc_syms = FALSE;
7065 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7070 if (local_syms != NULL
7071 && symtab_hdr->contents != (unsigned char *) local_syms)
7073 if (!info->keep_memory)
7076 symtab_hdr->contents = (unsigned char *) local_syms;
7084 /* Allocate space in .plt, .got and associated reloc sections for
7088 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7090 struct bfd_link_info *info;
7091 struct ppc_link_hash_table *htab;
7093 struct ppc_link_hash_entry *eh;
7094 struct ppc_dyn_relocs *p;
7095 struct got_entry *gent;
7097 if (h->root.type == bfd_link_hash_indirect)
7100 if (h->root.type == bfd_link_hash_warning)
7101 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7103 info = (struct bfd_link_info *) inf;
7104 htab = ppc_hash_table (info);
7106 if (htab->elf.dynamic_sections_created
7108 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7110 struct plt_entry *pent;
7111 bfd_boolean doneone = FALSE;
7112 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7113 if (pent->plt.refcount > 0)
7115 /* If this is the first .plt entry, make room for the special
7119 s->size += PLT_INITIAL_ENTRY_SIZE;
7121 pent->plt.offset = s->size;
7123 /* Make room for this entry. */
7124 s->size += PLT_ENTRY_SIZE;
7126 /* Make room for the .glink code. */
7129 s->size += GLINK_CALL_STUB_SIZE;
7130 /* We need bigger stubs past index 32767. */
7131 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7135 /* We also need to make an entry in the .rela.plt section. */
7137 s->size += sizeof (Elf64_External_Rela);
7141 pent->plt.offset = (bfd_vma) -1;
7144 h->plt.plist = NULL;
7150 h->plt.plist = NULL;
7154 eh = (struct ppc_link_hash_entry *) h;
7155 /* Run through the TLS GD got entries first if we're changing them
7157 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7158 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7159 if (gent->got.refcount > 0
7160 && (gent->tls_type & TLS_GD) != 0)
7162 /* This was a GD entry that has been converted to TPREL. If
7163 there happens to be a TPREL entry we can use that one. */
7164 struct got_entry *ent;
7165 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7166 if (ent->got.refcount > 0
7167 && (ent->tls_type & TLS_TPREL) != 0
7168 && ent->addend == gent->addend
7169 && ent->owner == gent->owner)
7171 gent->got.refcount = 0;
7175 /* If not, then we'll be using our own TPREL entry. */
7176 if (gent->got.refcount != 0)
7177 gent->tls_type = TLS_TLS | TLS_TPREL;
7180 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7181 if (gent->got.refcount > 0)
7185 /* Make sure this symbol is output as a dynamic symbol.
7186 Undefined weak syms won't yet be marked as dynamic,
7187 nor will all TLS symbols. */
7188 if (h->dynindx == -1
7189 && !h->forced_local)
7191 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7195 if ((gent->tls_type & TLS_LD) != 0
7198 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7202 s = ppc64_elf_tdata (gent->owner)->got;
7203 gent->got.offset = s->size;
7205 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7206 dyn = htab->elf.dynamic_sections_created;
7208 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7209 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7210 || h->root.type != bfd_link_hash_undefweak))
7211 ppc64_elf_tdata (gent->owner)->relgot->size
7212 += (gent->tls_type & eh->tls_mask & TLS_GD
7213 ? 2 * sizeof (Elf64_External_Rela)
7214 : sizeof (Elf64_External_Rela));
7217 gent->got.offset = (bfd_vma) -1;
7219 if (eh->dyn_relocs == NULL)
7222 /* In the shared -Bsymbolic case, discard space allocated for
7223 dynamic pc-relative relocs against symbols which turn out to be
7224 defined in regular objects. For the normal shared case, discard
7225 space for relocs that have become local due to symbol visibility
7230 /* Relocs that use pc_count are those that appear on a call insn,
7231 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7232 generated via assembly. We want calls to protected symbols to
7233 resolve directly to the function rather than going via the plt.
7234 If people want function pointer comparisons to work as expected
7235 then they should avoid writing weird assembly. */
7236 if (SYMBOL_CALLS_LOCAL (info, h))
7238 struct ppc_dyn_relocs **pp;
7240 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7242 p->count -= p->pc_count;
7251 /* Also discard relocs on undefined weak syms with non-default
7253 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7254 && h->root.type == bfd_link_hash_undefweak)
7255 eh->dyn_relocs = NULL;
7257 else if (ELIMINATE_COPY_RELOCS)
7259 /* For the non-shared case, discard space for relocs against
7260 symbols which turn out to need copy relocs or are not
7267 /* Make sure this symbol is output as a dynamic symbol.
7268 Undefined weak syms won't yet be marked as dynamic. */
7269 if (h->dynindx == -1
7270 && !h->forced_local)
7272 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7276 /* If that succeeded, we know we'll be keeping all the
7278 if (h->dynindx != -1)
7282 eh->dyn_relocs = NULL;
7287 /* Finally, allocate space. */
7288 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7290 asection *sreloc = elf_section_data (p->sec)->sreloc;
7291 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7297 /* Find any dynamic relocs that apply to read-only sections. */
7300 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7302 struct ppc_link_hash_entry *eh;
7303 struct ppc_dyn_relocs *p;
7305 if (h->root.type == bfd_link_hash_warning)
7306 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7308 eh = (struct ppc_link_hash_entry *) h;
7309 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7311 asection *s = p->sec->output_section;
7313 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7315 struct bfd_link_info *info = inf;
7317 info->flags |= DF_TEXTREL;
7319 /* Not an error, just cut short the traversal. */
7326 /* Set the sizes of the dynamic sections. */
7329 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7330 struct bfd_link_info *info)
7332 struct ppc_link_hash_table *htab;
7338 htab = ppc_hash_table (info);
7339 dynobj = htab->elf.dynobj;
7343 if (htab->elf.dynamic_sections_created)
7345 /* Set the contents of the .interp section to the interpreter. */
7346 if (info->executable)
7348 s = bfd_get_section_by_name (dynobj, ".interp");
7351 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7352 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7356 /* Set up .got offsets for local syms, and space for local dynamic
7358 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7360 struct got_entry **lgot_ents;
7361 struct got_entry **end_lgot_ents;
7363 bfd_size_type locsymcount;
7364 Elf_Internal_Shdr *symtab_hdr;
7367 if (!is_ppc64_elf_target (ibfd->xvec))
7370 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7372 s = ppc64_elf_tdata (ibfd)->got;
7373 ppc64_tlsld_got (ibfd)->offset = s->size;
7377 srel = ppc64_elf_tdata (ibfd)->relgot;
7378 srel->size += sizeof (Elf64_External_Rela);
7382 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7384 for (s = ibfd->sections; s != NULL; s = s->next)
7386 struct ppc_dyn_relocs *p;
7388 for (p = *((struct ppc_dyn_relocs **)
7389 &elf_section_data (s)->local_dynrel);
7393 if (!bfd_is_abs_section (p->sec)
7394 && bfd_is_abs_section (p->sec->output_section))
7396 /* Input section has been discarded, either because
7397 it is a copy of a linkonce section or due to
7398 linker script /DISCARD/, so we'll be discarding
7401 else if (p->count != 0)
7403 srel = elf_section_data (p->sec)->sreloc;
7404 srel->size += p->count * sizeof (Elf64_External_Rela);
7405 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7406 info->flags |= DF_TEXTREL;
7411 lgot_ents = elf_local_got_ents (ibfd);
7415 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7416 locsymcount = symtab_hdr->sh_info;
7417 end_lgot_ents = lgot_ents + locsymcount;
7418 lgot_masks = (char *) end_lgot_ents;
7419 s = ppc64_elf_tdata (ibfd)->got;
7420 srel = ppc64_elf_tdata (ibfd)->relgot;
7421 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7423 struct got_entry *ent;
7425 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7426 if (ent->got.refcount > 0)
7428 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7430 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7432 ppc64_tlsld_got (ibfd)->offset = s->size;
7435 srel->size += sizeof (Elf64_External_Rela);
7437 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7441 ent->got.offset = s->size;
7442 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7446 srel->size += 2 * sizeof (Elf64_External_Rela);
7452 srel->size += sizeof (Elf64_External_Rela);
7457 ent->got.offset = (bfd_vma) -1;
7461 /* Allocate global sym .plt and .got entries, and space for global
7462 sym dynamic relocs. */
7463 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7465 /* We now have determined the sizes of the various dynamic sections.
7466 Allocate memory for them. */
7468 for (s = dynobj->sections; s != NULL; s = s->next)
7470 if ((s->flags & SEC_LINKER_CREATED) == 0)
7473 if (s == htab->brlt || s == htab->relbrlt)
7474 /* These haven't been allocated yet; don't strip. */
7476 else if (s == htab->got
7478 || s == htab->glink)
7480 /* Strip this section if we don't need it; see the
7483 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7487 /* If we don't need this section, strip it from the
7488 output file. This is mostly to handle .rela.bss and
7489 .rela.plt. We must create both sections in
7490 create_dynamic_sections, because they must be created
7491 before the linker maps input sections to output
7492 sections. The linker does that before
7493 adjust_dynamic_symbol is called, and it is that
7494 function which decides whether anything needs to go
7495 into these sections. */
7499 if (s != htab->relplt)
7502 /* We use the reloc_count field as a counter if we need
7503 to copy relocs into the output file. */
7509 /* It's not one of our sections, so don't allocate space. */
7515 _bfd_strip_section_from_output (info, s);
7519 /* .plt is in the bss section. We don't initialise it. */
7523 /* Allocate memory for the section contents. We use bfd_zalloc
7524 here in case unused entries are not reclaimed before the
7525 section's contents are written out. This should not happen,
7526 but this way if it does we get a R_PPC64_NONE reloc in .rela
7527 sections instead of garbage.
7528 We also rely on the section contents being zero when writing
7530 s->contents = bfd_zalloc (dynobj, s->size);
7531 if (s->contents == NULL)
7535 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7537 if (!is_ppc64_elf_target (ibfd->xvec))
7540 s = ppc64_elf_tdata (ibfd)->got;
7541 if (s != NULL && s != htab->got)
7544 _bfd_strip_section_from_output (info, s);
7547 s->contents = bfd_zalloc (ibfd, s->size);
7548 if (s->contents == NULL)
7552 s = ppc64_elf_tdata (ibfd)->relgot;
7556 _bfd_strip_section_from_output (info, s);
7559 s->contents = bfd_zalloc (ibfd, s->size);
7560 if (s->contents == NULL)
7568 if (htab->elf.dynamic_sections_created)
7570 /* Add some entries to the .dynamic section. We fill in the
7571 values later, in ppc64_elf_finish_dynamic_sections, but we
7572 must add the entries now so that we get the correct size for
7573 the .dynamic section. The DT_DEBUG entry is filled in by the
7574 dynamic linker and used by the debugger. */
7575 #define add_dynamic_entry(TAG, VAL) \
7576 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7578 if (info->executable)
7580 if (!add_dynamic_entry (DT_DEBUG, 0))
7584 if (htab->plt != NULL && htab->plt->size != 0)
7586 if (!add_dynamic_entry (DT_PLTGOT, 0)
7587 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7588 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7589 || !add_dynamic_entry (DT_JMPREL, 0)
7590 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7596 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7597 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7603 if (!add_dynamic_entry (DT_RELA, 0)
7604 || !add_dynamic_entry (DT_RELASZ, 0)
7605 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7608 /* If any dynamic relocs apply to a read-only section,
7609 then we need a DT_TEXTREL entry. */
7610 if ((info->flags & DF_TEXTREL) == 0)
7611 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7613 if ((info->flags & DF_TEXTREL) != 0)
7615 if (!add_dynamic_entry (DT_TEXTREL, 0))
7620 #undef add_dynamic_entry
7625 /* Determine the type of stub needed, if any, for a call. */
7627 static inline enum ppc_stub_type
7628 ppc_type_of_stub (asection *input_sec,
7629 const Elf_Internal_Rela *rel,
7630 struct ppc_link_hash_entry **hash,
7631 bfd_vma destination)
7633 struct ppc_link_hash_entry *h = *hash;
7635 bfd_vma branch_offset;
7636 bfd_vma max_branch_offset;
7637 enum elf_ppc64_reloc_type r_type;
7642 && h->oh->is_func_descriptor)
7645 if (h->elf.dynindx != -1)
7647 struct plt_entry *ent;
7649 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7650 if (ent->addend == rel->r_addend
7651 && ent->plt.offset != (bfd_vma) -1)
7654 return ppc_stub_plt_call;
7658 if (!(h->elf.root.type == bfd_link_hash_defined
7659 || h->elf.root.type == bfd_link_hash_defweak)
7660 || h->elf.root.u.def.section->output_section == NULL)
7661 return ppc_stub_none;
7664 /* Determine where the call point is. */
7665 location = (input_sec->output_offset
7666 + input_sec->output_section->vma
7669 branch_offset = destination - location;
7670 r_type = ELF64_R_TYPE (rel->r_info);
7672 /* Determine if a long branch stub is needed. */
7673 max_branch_offset = 1 << 25;
7674 if (r_type != R_PPC64_REL24)
7675 max_branch_offset = 1 << 15;
7677 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7678 /* We need a stub. Figure out whether a long_branch or plt_branch
7680 return ppc_stub_long_branch;
7682 return ppc_stub_none;
7685 /* Build a .plt call stub. */
7687 static inline bfd_byte *
7688 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7690 #define PPC_LO(v) ((v) & 0xffff)
7691 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7692 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7694 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7695 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7696 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7697 if (PPC_HA (offset + 8) != PPC_HA (offset))
7698 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7700 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7701 if (PPC_HA (offset + 8) != PPC_HA (offset))
7702 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7704 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7705 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7706 bfd_put_32 (obfd, BCTR, p), p += 4;
7711 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7713 struct ppc_stub_hash_entry *stub_entry;
7714 struct ppc_branch_hash_entry *br_entry;
7715 struct bfd_link_info *info;
7716 struct ppc_link_hash_table *htab;
7720 struct plt_entry *ent;
7724 /* Massage our args to the form they really have. */
7725 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7728 htab = ppc_hash_table (info);
7730 /* Make a note of the offset within the stubs for this entry. */
7731 stub_entry->stub_offset = stub_entry->stub_sec->size;
7732 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7734 htab->stub_count[stub_entry->stub_type - 1] += 1;
7735 switch (stub_entry->stub_type)
7737 case ppc_stub_long_branch:
7738 case ppc_stub_long_branch_r2off:
7739 /* Branches are relative. This is where we are going to. */
7740 off = dest = (stub_entry->target_value
7741 + stub_entry->target_section->output_offset
7742 + stub_entry->target_section->output_section->vma);
7744 /* And this is where we are coming from. */
7745 off -= (stub_entry->stub_offset
7746 + stub_entry->stub_sec->output_offset
7747 + stub_entry->stub_sec->output_section->vma);
7749 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7755 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7756 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7757 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7759 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7761 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7766 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
7768 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
7770 if (info->emitrelocations)
7772 Elf_Internal_Rela *relocs, *r;
7773 struct bfd_elf_section_data *elfsec_data;
7775 elfsec_data = elf_section_data (stub_entry->stub_sec);
7776 relocs = elfsec_data->relocs;
7779 bfd_size_type relsize;
7780 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7781 relocs = bfd_alloc (htab->stub_bfd, relsize);
7784 elfsec_data->relocs = relocs;
7785 elfsec_data->rel_hdr.sh_size = relsize;
7786 elfsec_data->rel_hdr.sh_entsize = 24;
7787 stub_entry->stub_sec->reloc_count = 0;
7789 r = relocs + stub_entry->stub_sec->reloc_count;
7790 stub_entry->stub_sec->reloc_count += 1;
7791 r->r_offset = loc - stub_entry->stub_sec->contents;
7792 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7794 if (stub_entry->h != NULL)
7796 struct elf_link_hash_entry **hashes;
7797 unsigned long symndx;
7798 struct ppc_link_hash_entry *h;
7800 hashes = elf_sym_hashes (htab->stub_bfd);
7803 bfd_size_type hsize;
7805 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7806 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7809 elf_sym_hashes (htab->stub_bfd) = hashes;
7810 htab->stub_globals = 1;
7812 symndx = htab->stub_globals++;
7814 hashes[symndx] = &h->elf;
7815 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7816 if (h->oh != NULL && h->oh->is_func)
7818 if (h->elf.root.u.def.section != stub_entry->target_section)
7819 /* H is an opd symbol. The addend must be zero. */
7823 off = (h->elf.root.u.def.value
7824 + h->elf.root.u.def.section->output_offset
7825 + h->elf.root.u.def.section->output_section->vma);
7832 case ppc_stub_plt_branch:
7833 case ppc_stub_plt_branch_r2off:
7834 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7835 stub_entry->root.string + 9,
7837 if (br_entry == NULL)
7839 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7840 stub_entry->root.string + 9);
7841 htab->stub_error = TRUE;
7845 off = (stub_entry->target_value
7846 + stub_entry->target_section->output_offset
7847 + stub_entry->target_section->output_section->vma);
7849 bfd_put_64 (htab->brlt->owner, off,
7850 htab->brlt->contents + br_entry->offset);
7852 if (htab->relbrlt != NULL)
7854 /* Create a reloc for the branch lookup table entry. */
7855 Elf_Internal_Rela rela;
7858 rela.r_offset = (br_entry->offset
7859 + htab->brlt->output_offset
7860 + htab->brlt->output_section->vma);
7861 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7862 rela.r_addend = off;
7864 rl = htab->relbrlt->contents;
7865 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7866 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
7869 off = (br_entry->offset
7870 + htab->brlt->output_offset
7871 + htab->brlt->output_section->vma
7872 - elf_gp (htab->brlt->output_section->owner)
7873 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7875 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7877 (*_bfd_error_handler)
7878 (_("linkage table error against `%s'"),
7879 stub_entry->root.string);
7880 bfd_set_error (bfd_error_bad_value);
7881 htab->stub_error = TRUE;
7886 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7888 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7890 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7897 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7898 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7899 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7901 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7903 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7905 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7907 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7911 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
7913 bfd_put_32 (htab->stub_bfd, BCTR, loc);
7916 case ppc_stub_plt_call:
7917 /* Do the best we can for shared libraries built without
7918 exporting ".foo" for each "foo". This can happen when symbol
7919 versioning scripts strip all bar a subset of symbols. */
7920 if (stub_entry->h->oh != NULL
7921 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
7922 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
7924 /* Point the symbol at the stub. There may be multiple stubs,
7925 we don't really care; The main thing is to make this sym
7926 defined somewhere. Maybe defining the symbol in the stub
7927 section is a silly idea. If we didn't do this, htab->top_id
7929 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
7930 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
7931 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
7934 /* Now build the stub. */
7936 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7937 if (ent->addend == stub_entry->addend)
7939 off = ent->plt.offset;
7942 if (off >= (bfd_vma) -2)
7945 off &= ~ (bfd_vma) 1;
7946 off += (htab->plt->output_offset
7947 + htab->plt->output_section->vma
7948 - elf_gp (htab->plt->output_section->owner)
7949 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7951 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7953 (*_bfd_error_handler)
7954 (_("linkage table error against `%s'"),
7955 stub_entry->h->elf.root.root.string);
7956 bfd_set_error (bfd_error_bad_value);
7957 htab->stub_error = TRUE;
7961 p = build_plt_stub (htab->stub_bfd, loc, off);
7970 stub_entry->stub_sec->size += size;
7972 if (htab->emit_stub_syms)
7974 struct elf_link_hash_entry *h;
7977 const char *const stub_str[] = { "long_branch",
7978 "long_branch_r2off",
7983 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
7984 len2 = strlen (stub_entry->root.string);
7985 name = bfd_malloc (len1 + len2 + 2);
7988 memcpy (name, stub_entry->root.string, 9);
7989 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
7990 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
7991 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
7994 if (h->root.type == bfd_link_hash_new)
7996 h->root.type = bfd_link_hash_defined;
7997 h->root.u.def.section = stub_entry->stub_sec;
7998 h->root.u.def.value = stub_entry->stub_offset;
8001 h->ref_regular_nonweak = 1;
8002 h->forced_local = 1;
8010 /* As above, but don't actually build the stub. Just bump offset so
8011 we know stub section sizes, and select plt_branch stubs where
8012 long_branch stubs won't do. */
8015 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8017 struct ppc_stub_hash_entry *stub_entry;
8018 struct bfd_link_info *info;
8019 struct ppc_link_hash_table *htab;
8023 /* Massage our args to the form they really have. */
8024 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8027 htab = ppc_hash_table (info);
8029 if (stub_entry->stub_type == ppc_stub_plt_call)
8031 struct plt_entry *ent;
8033 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8034 if (ent->addend == stub_entry->addend)
8036 off = ent->plt.offset & ~(bfd_vma) 1;
8039 if (off >= (bfd_vma) -2)
8041 off += (htab->plt->output_offset
8042 + htab->plt->output_section->vma
8043 - elf_gp (htab->plt->output_section->owner)
8044 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8046 size = PLT_CALL_STUB_SIZE;
8047 if (PPC_HA (off + 16) != PPC_HA (off))
8052 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8054 off = (stub_entry->target_value
8055 + stub_entry->target_section->output_offset
8056 + stub_entry->target_section->output_section->vma);
8057 off -= (stub_entry->stub_sec->size
8058 + stub_entry->stub_sec->output_offset
8059 + stub_entry->stub_sec->output_section->vma);
8061 /* Reset the stub type from the plt variant in case we now
8062 can reach with a shorter stub. */
8063 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8064 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8067 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8073 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8074 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8076 struct ppc_branch_hash_entry *br_entry;
8078 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8079 stub_entry->root.string + 9,
8081 if (br_entry == NULL)
8083 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8084 stub_entry->root.string + 9);
8085 htab->stub_error = TRUE;
8089 if (br_entry->iter != htab->stub_iteration)
8091 br_entry->iter = htab->stub_iteration;
8092 br_entry->offset = htab->brlt->size;
8093 htab->brlt->size += 8;
8095 if (htab->relbrlt != NULL)
8096 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8099 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8101 if (stub_entry->stub_type != ppc_stub_plt_branch)
8105 if (info->emitrelocations
8106 && (stub_entry->stub_type == ppc_stub_long_branch
8107 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8108 stub_entry->stub_sec->reloc_count += 1;
8111 stub_entry->stub_sec->size += size;
8115 /* Set up various things so that we can make a list of input sections
8116 for each output section included in the link. Returns -1 on error,
8117 0 when no stubs will be needed, and 1 on success. */
8120 ppc64_elf_setup_section_lists (bfd *output_bfd,
8121 struct bfd_link_info *info,
8125 int top_id, top_index, id;
8127 asection **input_list;
8129 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8131 htab->no_multi_toc = no_multi_toc;
8133 if (htab->brlt == NULL)
8136 /* Find the top input section id. */
8137 for (input_bfd = info->input_bfds, top_id = 3;
8139 input_bfd = input_bfd->link_next)
8141 for (section = input_bfd->sections;
8143 section = section->next)
8145 if (top_id < section->id)
8146 top_id = section->id;
8150 htab->top_id = top_id;
8151 amt = sizeof (struct map_stub) * (top_id + 1);
8152 htab->stub_group = bfd_zmalloc (amt);
8153 if (htab->stub_group == NULL)
8156 /* Set toc_off for com, und, abs and ind sections. */
8157 for (id = 0; id < 3; id++)
8158 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8160 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8162 /* We can't use output_bfd->section_count here to find the top output
8163 section index as some sections may have been removed, and
8164 _bfd_strip_section_from_output doesn't renumber the indices. */
8165 for (section = output_bfd->sections, top_index = 0;
8167 section = section->next)
8169 if (top_index < section->index)
8170 top_index = section->index;
8173 htab->top_index = top_index;
8174 amt = sizeof (asection *) * (top_index + 1);
8175 input_list = bfd_zmalloc (amt);
8176 htab->input_list = input_list;
8177 if (input_list == NULL)
8183 /* The linker repeatedly calls this function for each TOC input section
8184 and linker generated GOT section. Group input bfds such that the toc
8185 within a group is less than 64k in size. Will break with cute linker
8186 scripts that play games with dot in the output toc section. */
8189 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8191 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8193 if (!htab->no_multi_toc)
8195 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8196 bfd_vma off = addr - htab->toc_curr;
8198 if (off + isec->size > 0x10000)
8199 htab->toc_curr = addr;
8201 elf_gp (isec->owner) = (htab->toc_curr
8202 - elf_gp (isec->output_section->owner)
8207 /* Called after the last call to the above function. */
8210 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8212 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8214 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8216 /* toc_curr tracks the TOC offset used for code sections below in
8217 ppc64_elf_next_input_section. Start off at 0x8000. */
8218 htab->toc_curr = TOC_BASE_OFF;
8221 /* No toc references were found in ISEC. If the code in ISEC makes no
8222 calls, then there's no need to use toc adjusting stubs when branching
8223 into ISEC. Actually, indirect calls from ISEC are OK as they will
8224 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8225 needed, and 2 if a cyclical call-graph was found but no other reason
8226 for a stub was detected. If called from the top level, a return of
8227 2 means the same as a return of 0. */
8230 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8232 Elf_Internal_Rela *relstart, *rel;
8233 Elf_Internal_Sym *local_syms;
8235 struct ppc_link_hash_table *htab;
8237 /* We know none of our code bearing sections will need toc stubs. */
8238 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8241 if (isec->size == 0)
8244 if (isec->output_section == NULL)
8247 /* Hack for linux kernel. .fixup contains branches, but only back to
8248 the function that hit an exception. */
8249 if (strcmp (isec->name, ".fixup") == 0)
8252 if (isec->reloc_count == 0)
8255 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8257 if (relstart == NULL)
8260 /* Look for branches to outside of this section. */
8263 htab = ppc_hash_table (info);
8264 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8266 enum elf_ppc64_reloc_type r_type;
8267 unsigned long r_symndx;
8268 struct elf_link_hash_entry *h;
8269 Elf_Internal_Sym *sym;
8275 r_type = ELF64_R_TYPE (rel->r_info);
8276 if (r_type != R_PPC64_REL24
8277 && r_type != R_PPC64_REL14
8278 && r_type != R_PPC64_REL14_BRTAKEN
8279 && r_type != R_PPC64_REL14_BRNTAKEN)
8282 r_symndx = ELF64_R_SYM (rel->r_info);
8283 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8290 /* Ignore branches to undefined syms. */
8291 if (sym_sec == NULL)
8294 /* Calls to dynamic lib functions go through a plt call stub
8295 that uses r2. Assume branches to other sections not included
8296 in the link need stubs too, to cover -R and absolute syms. */
8297 if (sym_sec->output_section == NULL)
8304 sym_value = sym->st_value;
8307 if (h->root.type != bfd_link_hash_defined
8308 && h->root.type != bfd_link_hash_defweak)
8310 sym_value = h->root.u.def.value;
8312 sym_value += rel->r_addend;
8314 /* If this branch reloc uses an opd sym, find the code section. */
8315 opd_adjust = get_opd_info (sym_sec);
8316 if (opd_adjust != NULL)
8323 adjust = opd_adjust[sym->st_value / 8];
8325 /* Assume deleted functions won't ever be called. */
8327 sym_value += adjust;
8330 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8331 if (dest == (bfd_vma) -1)
8336 + sym_sec->output_offset
8337 + sym_sec->output_section->vma);
8339 /* Ignore branch to self. */
8340 if (sym_sec == isec)
8343 /* If the called function uses the toc, we need a stub. */
8344 if (sym_sec->has_toc_reloc
8345 || sym_sec->makes_toc_func_call)
8351 /* Assume any branch that needs a long branch stub might in fact
8352 need a plt_branch stub. A plt_branch stub uses r2. */
8353 else if (dest - (isec->output_offset
8354 + isec->output_section->vma
8355 + rel->r_offset) + (1 << 25) >= (2 << 25))
8361 /* If calling back to a section in the process of being tested, we
8362 can't say for sure that no toc adjusting stubs are needed, so
8363 don't return zero. */
8364 else if (sym_sec->call_check_in_progress)
8367 /* Branches to another section that itself doesn't have any TOC
8368 references are OK. Recursively call ourselves to check. */
8369 else if (sym_sec->id <= htab->top_id
8370 && htab->stub_group[sym_sec->id].toc_off == 0)
8374 /* Mark current section as indeterminate, so that other
8375 sections that call back to current won't be marked as
8377 isec->call_check_in_progress = 1;
8378 recur = toc_adjusting_stub_needed (info, sym_sec);
8379 isec->call_check_in_progress = 0;
8383 /* An error. Exit. */
8387 else if (recur <= 1)
8389 /* Known result. Mark as checked and set section flag. */
8390 htab->stub_group[sym_sec->id].toc_off = 1;
8393 sym_sec->makes_toc_func_call = 1;
8400 /* Unknown result. Continue checking. */
8406 if (local_syms != NULL
8407 && (elf_tdata (isec->owner)->symtab_hdr.contents
8408 != (unsigned char *) local_syms))
8410 if (elf_section_data (isec)->relocs != relstart)
8416 /* The linker repeatedly calls this function for each input section,
8417 in the order that input sections are linked into output sections.
8418 Build lists of input sections to determine groupings between which
8419 we may insert linker stubs. */
8422 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8424 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8426 if ((isec->output_section->flags & SEC_CODE) != 0
8427 && isec->output_section->index <= htab->top_index)
8429 asection **list = htab->input_list + isec->output_section->index;
8430 /* Steal the link_sec pointer for our list. */
8431 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8432 /* This happens to make the list in reverse order,
8433 which is what we want. */
8434 PREV_SEC (isec) = *list;
8438 if (htab->multi_toc_needed)
8440 /* If a code section has a function that uses the TOC then we need
8441 to use the right TOC (obviously). Also, make sure that .opd gets
8442 the correct TOC value for R_PPC64_TOC relocs that don't have or
8443 can't find their function symbol (shouldn't ever happen now). */
8444 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8446 if (elf_gp (isec->owner) != 0)
8447 htab->toc_curr = elf_gp (isec->owner);
8449 else if (htab->stub_group[isec->id].toc_off == 0)
8451 int ret = toc_adjusting_stub_needed (info, isec);
8455 isec->makes_toc_func_call = ret & 1;
8459 /* Functions that don't use the TOC can belong in any TOC group.
8460 Use the last TOC base. This happens to make _init and _fini
8462 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8466 /* See whether we can group stub sections together. Grouping stub
8467 sections may result in fewer stubs. More importantly, we need to
8468 put all .init* and .fini* stubs at the beginning of the .init or
8469 .fini output sections respectively, because glibc splits the
8470 _init and _fini functions into multiple parts. Putting a stub in
8471 the middle of a function is not a good idea. */
8474 group_sections (struct ppc_link_hash_table *htab,
8475 bfd_size_type stub_group_size,
8476 bfd_boolean stubs_always_before_branch)
8478 asection **list = htab->input_list + htab->top_index;
8481 asection *tail = *list;
8482 while (tail != NULL)
8486 bfd_size_type total;
8487 bfd_boolean big_sec;
8492 big_sec = total >= stub_group_size;
8493 curr_toc = htab->stub_group[tail->id].toc_off;
8495 while ((prev = PREV_SEC (curr)) != NULL
8496 && ((total += curr->output_offset - prev->output_offset)
8498 && htab->stub_group[prev->id].toc_off == curr_toc)
8501 /* OK, the size from the start of CURR to the end is less
8502 than stub_group_size and thus can be handled by one stub
8503 section. (or the tail section is itself larger than
8504 stub_group_size, in which case we may be toast.) We
8505 should really be keeping track of the total size of stubs
8506 added here, as stubs contribute to the final output
8507 section size. That's a little tricky, and this way will
8508 only break if stubs added make the total size more than
8509 2^25, ie. for the default stub_group_size, if stubs total
8510 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8513 prev = PREV_SEC (tail);
8514 /* Set up this stub group. */
8515 htab->stub_group[tail->id].link_sec = curr;
8517 while (tail != curr && (tail = prev) != NULL);
8519 /* But wait, there's more! Input sections up to stub_group_size
8520 bytes before the stub section can be handled by it too.
8521 Don't do this if we have a really large section after the
8522 stubs, as adding more stubs increases the chance that
8523 branches may not reach into the stub section. */
8524 if (!stubs_always_before_branch && !big_sec)
8528 && ((total += tail->output_offset - prev->output_offset)
8530 && htab->stub_group[prev->id].toc_off == curr_toc)
8533 prev = PREV_SEC (tail);
8534 htab->stub_group[tail->id].link_sec = curr;
8540 while (list-- != htab->input_list);
8541 free (htab->input_list);
8545 /* Determine and set the size of the stub section for a final link.
8547 The basic idea here is to examine all the relocations looking for
8548 PC-relative calls to a target that is unreachable with a "bl"
8552 ppc64_elf_size_stubs (bfd *output_bfd,
8553 struct bfd_link_info *info,
8554 bfd_signed_vma group_size,
8555 asection *(*add_stub_section) (const char *, asection *),
8556 void (*layout_sections_again) (void))
8558 bfd_size_type stub_group_size;
8559 bfd_boolean stubs_always_before_branch;
8560 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8562 /* Stash our params away. */
8563 htab->add_stub_section = add_stub_section;
8564 htab->layout_sections_again = layout_sections_again;
8565 stubs_always_before_branch = group_size < 0;
8567 stub_group_size = -group_size;
8569 stub_group_size = group_size;
8570 if (stub_group_size == 1)
8572 /* Default values. */
8573 if (stubs_always_before_branch)
8575 stub_group_size = 0x1e00000;
8576 if (htab->has_14bit_branch)
8577 stub_group_size = 0x7800;
8581 stub_group_size = 0x1c00000;
8582 if (htab->has_14bit_branch)
8583 stub_group_size = 0x7000;
8587 group_sections (htab, stub_group_size, stubs_always_before_branch);
8592 unsigned int bfd_indx;
8594 bfd_boolean stub_changed;
8596 htab->stub_iteration += 1;
8597 stub_changed = FALSE;
8599 for (input_bfd = info->input_bfds, bfd_indx = 0;
8601 input_bfd = input_bfd->link_next, bfd_indx++)
8603 Elf_Internal_Shdr *symtab_hdr;
8605 Elf_Internal_Sym *local_syms = NULL;
8607 /* We'll need the symbol table in a second. */
8608 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8609 if (symtab_hdr->sh_info == 0)
8612 /* Walk over each section attached to the input bfd. */
8613 for (section = input_bfd->sections;
8615 section = section->next)
8617 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
8619 /* If there aren't any relocs, then there's nothing more
8621 if ((section->flags & SEC_RELOC) == 0
8622 || section->reloc_count == 0)
8625 /* If this section is a link-once section that will be
8626 discarded, then don't create any stubs. */
8627 if (section->output_section == NULL
8628 || section->output_section->owner != output_bfd)
8631 /* Get the relocs. */
8633 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
8635 if (internal_relocs == NULL)
8636 goto error_ret_free_local;
8638 /* Now examine each relocation. */
8639 irela = internal_relocs;
8640 irelaend = irela + section->reloc_count;
8641 for (; irela < irelaend; irela++)
8643 enum elf_ppc64_reloc_type r_type;
8644 unsigned int r_indx;
8645 enum ppc_stub_type stub_type;
8646 struct ppc_stub_hash_entry *stub_entry;
8647 asection *sym_sec, *code_sec;
8649 bfd_vma destination;
8650 bfd_boolean ok_dest;
8651 struct ppc_link_hash_entry *hash;
8652 struct ppc_link_hash_entry *fdh;
8653 struct elf_link_hash_entry *h;
8654 Elf_Internal_Sym *sym;
8656 const asection *id_sec;
8659 r_type = ELF64_R_TYPE (irela->r_info);
8660 r_indx = ELF64_R_SYM (irela->r_info);
8662 if (r_type >= R_PPC64_max)
8664 bfd_set_error (bfd_error_bad_value);
8665 goto error_ret_free_internal;
8668 /* Only look for stubs on branch instructions. */
8669 if (r_type != R_PPC64_REL24
8670 && r_type != R_PPC64_REL14
8671 && r_type != R_PPC64_REL14_BRTAKEN
8672 && r_type != R_PPC64_REL14_BRNTAKEN)
8675 /* Now determine the call target, its name, value,
8677 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8679 goto error_ret_free_internal;
8680 hash = (struct ppc_link_hash_entry *) h;
8686 sym_value = sym->st_value;
8692 /* Recognise an old ABI func code entry sym, and
8693 use the func descriptor sym instead. */
8694 if (hash->elf.root.type == bfd_link_hash_undefweak
8695 && hash->elf.root.root.string[0] == '.'
8696 && (fdh = get_fdh (hash, htab)) != NULL)
8698 if (fdh->elf.root.type == bfd_link_hash_defined
8699 || fdh->elf.root.type == bfd_link_hash_defweak)
8701 sym_sec = fdh->elf.root.u.def.section;
8702 sym_value = fdh->elf.root.u.def.value;
8703 if (sym_sec->output_section != NULL)
8709 else if (hash->elf.root.type == bfd_link_hash_defined
8710 || hash->elf.root.type == bfd_link_hash_defweak)
8712 sym_value = hash->elf.root.u.def.value;
8713 if (sym_sec->output_section != NULL)
8716 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8718 else if (hash->elf.root.type == bfd_link_hash_undefined)
8722 bfd_set_error (bfd_error_bad_value);
8723 goto error_ret_free_internal;
8730 sym_value += irela->r_addend;
8731 destination = (sym_value
8732 + sym_sec->output_offset
8733 + sym_sec->output_section->vma);
8737 opd_adjust = get_opd_info (sym_sec);
8738 if (opd_adjust != NULL)
8744 long adjust = opd_adjust[sym_value / 8];
8747 sym_value += adjust;
8749 dest = opd_entry_value (sym_sec, sym_value,
8750 &code_sec, &sym_value);
8751 if (dest != (bfd_vma) -1)
8756 /* Fixup old ABI sym to point at code
8758 hash->elf.root.type = bfd_link_hash_defweak;
8759 hash->elf.root.u.def.section = code_sec;
8760 hash->elf.root.u.def.value = sym_value;
8765 /* Determine what (if any) linker stub is needed. */
8766 stub_type = ppc_type_of_stub (section, irela, &hash,
8769 if (stub_type != ppc_stub_plt_call)
8771 /* Check whether we need a TOC adjusting stub.
8772 Since the linker pastes together pieces from
8773 different object files when creating the
8774 _init and _fini functions, it may be that a
8775 call to what looks like a local sym is in
8776 fact a call needing a TOC adjustment. */
8777 if (code_sec != NULL
8778 && code_sec->output_section != NULL
8779 && (htab->stub_group[code_sec->id].toc_off
8780 != htab->stub_group[section->id].toc_off)
8781 && (code_sec->has_toc_reloc
8782 || code_sec->makes_toc_func_call))
8783 stub_type = ppc_stub_long_branch_r2off;
8786 if (stub_type == ppc_stub_none)
8789 /* __tls_get_addr calls might be eliminated. */
8790 if (stub_type != ppc_stub_plt_call
8792 && (hash == htab->tls_get_addr
8793 || hash == htab->tls_get_addr_fd)
8794 && section->has_tls_reloc
8795 && irela != internal_relocs)
8800 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
8801 irela - 1, input_bfd))
8802 goto error_ret_free_internal;
8807 /* Support for grouping stub sections. */
8808 id_sec = htab->stub_group[section->id].link_sec;
8810 /* Get the name of this stub. */
8811 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8813 goto error_ret_free_internal;
8815 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
8816 stub_name, FALSE, FALSE);
8817 if (stub_entry != NULL)
8819 /* The proper stub has already been created. */
8824 stub_entry = ppc_add_stub (stub_name, section, htab);
8825 if (stub_entry == NULL)
8828 error_ret_free_internal:
8829 if (elf_section_data (section)->relocs == NULL)
8830 free (internal_relocs);
8831 error_ret_free_local:
8832 if (local_syms != NULL
8833 && (symtab_hdr->contents
8834 != (unsigned char *) local_syms))
8839 stub_entry->stub_type = stub_type;
8840 stub_entry->target_value = sym_value;
8841 stub_entry->target_section = code_sec;
8842 stub_entry->h = hash;
8843 stub_entry->addend = irela->r_addend;
8845 if (stub_entry->h != NULL)
8846 htab->stub_globals += 1;
8848 stub_changed = TRUE;
8851 /* We're done with the internal relocs, free them. */
8852 if (elf_section_data (section)->relocs != internal_relocs)
8853 free (internal_relocs);
8856 if (local_syms != NULL
8857 && symtab_hdr->contents != (unsigned char *) local_syms)
8859 if (!info->keep_memory)
8862 symtab_hdr->contents = (unsigned char *) local_syms;
8869 /* OK, we've added some stubs. Find out the new size of the
8871 for (stub_sec = htab->stub_bfd->sections;
8873 stub_sec = stub_sec->next)
8874 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8877 stub_sec->reloc_count = 0;
8880 htab->brlt->size = 0;
8881 if (htab->relbrlt != NULL)
8882 htab->relbrlt->size = 0;
8884 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
8886 /* Ask the linker to do its stuff. */
8887 (*htab->layout_sections_again) ();
8890 /* It would be nice to strip .branch_lt from the output if the
8891 section is empty, but it's too late. If we strip sections here,
8892 the dynamic symbol table is corrupted since the section symbol
8893 for the stripped section isn't written. */
8898 /* Called after we have determined section placement. If sections
8899 move, we'll be called again. Provide a value for TOCstart. */
8902 ppc64_elf_toc (bfd *obfd)
8907 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8908 order. The TOC starts where the first of these sections starts. */
8909 s = bfd_get_section_by_name (obfd, ".got");
8911 s = bfd_get_section_by_name (obfd, ".toc");
8913 s = bfd_get_section_by_name (obfd, ".tocbss");
8915 s = bfd_get_section_by_name (obfd, ".plt");
8918 /* This may happen for
8919 o references to TOC base (SYM@toc / TOC[tc0]) without a
8922 o --gc-sections and empty TOC sections
8924 FIXME: Warn user? */
8926 /* Look for a likely section. We probably won't even be
8928 for (s = obfd->sections; s != NULL; s = s->next)
8929 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
8930 == (SEC_ALLOC | SEC_SMALL_DATA))
8933 for (s = obfd->sections; s != NULL; s = s->next)
8934 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
8935 == (SEC_ALLOC | SEC_SMALL_DATA))
8938 for (s = obfd->sections; s != NULL; s = s->next)
8939 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
8942 for (s = obfd->sections; s != NULL; s = s->next)
8943 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
8949 TOCstart = s->output_section->vma + s->output_offset;
8954 /* Build all the stubs associated with the current output file.
8955 The stubs are kept in a hash table attached to the main linker
8956 hash table. This function is called via gldelf64ppc_finish. */
8959 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
8960 struct bfd_link_info *info,
8963 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8966 int stub_sec_count = 0;
8968 htab->emit_stub_syms = emit_stub_syms;
8970 /* Allocate memory to hold the linker stubs. */
8971 for (stub_sec = htab->stub_bfd->sections;
8973 stub_sec = stub_sec->next)
8974 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
8975 && stub_sec->size != 0)
8977 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
8978 if (stub_sec->contents == NULL)
8980 /* We want to check that built size is the same as calculated
8981 size. rawsize is a convenient location to use. */
8982 stub_sec->rawsize = stub_sec->size;
8986 if (htab->plt != NULL)
8991 /* Build the .glink plt call stub. */
8992 plt0 = (htab->plt->output_section->vma
8993 + htab->plt->output_offset
8994 - (htab->glink->output_section->vma
8995 + htab->glink->output_offset
8996 + GLINK_CALL_STUB_SIZE));
8997 if (plt0 + 0x80008000 > 0xffffffff)
8999 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9000 bfd_set_error (bfd_error_bad_value);
9004 if (htab->emit_stub_syms)
9006 struct elf_link_hash_entry *h;
9007 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9010 if (h->root.type == bfd_link_hash_new)
9012 h->root.type = bfd_link_hash_defined;
9013 h->root.u.def.section = htab->glink;
9014 h->root.u.def.value = 0;
9017 h->ref_regular_nonweak = 1;
9018 h->forced_local = 1;
9022 p = htab->glink->contents;
9023 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
9025 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
9027 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
9029 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9031 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
9033 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
9035 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
9037 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9039 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
9041 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
9043 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
9045 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
9047 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9049 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9051 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9053 bfd_put_32 (htab->glink->owner, BCTR, p);
9056 /* Build the .glink lazy link call stubs. */
9058 while (p < htab->glink->contents + htab->glink->size)
9062 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9067 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9069 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9072 bfd_put_32 (htab->glink->owner,
9073 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
9077 htab->glink->rawsize = p - htab->glink->contents;
9080 if (htab->brlt->size != 0)
9082 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9084 if (htab->brlt->contents == NULL)
9087 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9089 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9090 htab->relbrlt->size);
9091 if (htab->relbrlt->contents == NULL)
9095 /* Build the stubs as directed by the stub hash table. */
9096 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9098 for (stub_sec = htab->stub_bfd->sections;
9100 stub_sec = stub_sec->next)
9101 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9103 stub_sec_count += 1;
9104 if (stub_sec->rawsize != stub_sec->size)
9108 if (stub_sec != NULL
9109 || htab->glink->rawsize != htab->glink->size)
9111 htab->stub_error = TRUE;
9112 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9115 if (htab->stub_error)
9120 *stats = bfd_malloc (500);
9124 sprintf (*stats, _("linker stubs in %u group%s\n"
9127 " long branch %lu\n"
9128 " long toc adj %lu\n"
9131 stub_sec_count == 1 ? "" : "s",
9132 htab->stub_count[ppc_stub_long_branch - 1],
9133 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9134 htab->stub_count[ppc_stub_plt_branch - 1],
9135 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9136 htab->stub_count[ppc_stub_plt_call - 1]);
9141 /* This function undoes the changes made by add_symbol_adjust. */
9144 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9146 struct ppc_link_hash_entry *eh;
9148 if (h->root.type == bfd_link_hash_indirect)
9151 if (h->root.type == bfd_link_hash_warning)
9152 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9154 eh = (struct ppc_link_hash_entry *) h;
9155 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9158 eh->elf.root.type = bfd_link_hash_undefined;
9163 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9166 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9169 /* The RELOCATE_SECTION function is called by the ELF backend linker
9170 to handle the relocations for a section.
9172 The relocs are always passed as Rela structures; if the section
9173 actually uses Rel structures, the r_addend field will always be
9176 This function is responsible for adjust the section contents as
9177 necessary, and (if using Rela relocs and generating a
9178 relocatable output file) adjusting the reloc addend as
9181 This function does not have to worry about setting the reloc
9182 address or the reloc symbol index.
9184 LOCAL_SYMS is a pointer to the swapped in local symbols.
9186 LOCAL_SECTIONS is an array giving the section in the input file
9187 corresponding to the st_shndx field of each local symbol.
9189 The global hash table entry for the global symbols can be found
9190 via elf_sym_hashes (input_bfd).
9192 When generating relocatable output, this function must handle
9193 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9194 going to be the section symbol corresponding to the output
9195 section, which means that the addend must be adjusted
9199 ppc64_elf_relocate_section (bfd *output_bfd,
9200 struct bfd_link_info *info,
9202 asection *input_section,
9204 Elf_Internal_Rela *relocs,
9205 Elf_Internal_Sym *local_syms,
9206 asection **local_sections)
9208 struct ppc_link_hash_table *htab;
9209 Elf_Internal_Shdr *symtab_hdr;
9210 struct elf_link_hash_entry **sym_hashes;
9211 Elf_Internal_Rela *rel;
9212 Elf_Internal_Rela *relend;
9213 Elf_Internal_Rela outrel;
9215 struct got_entry **local_got_ents;
9217 bfd_boolean ret = TRUE;
9219 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9220 bfd_boolean is_power4 = FALSE;
9222 if (info->relocatable)
9225 /* Initialize howto table if needed. */
9226 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9229 htab = ppc_hash_table (info);
9231 /* Don't relocate stub sections. */
9232 if (input_section->owner == htab->stub_bfd)
9235 local_got_ents = elf_local_got_ents (input_bfd);
9236 TOCstart = elf_gp (output_bfd);
9237 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9238 sym_hashes = elf_sym_hashes (input_bfd);
9239 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9242 relend = relocs + input_section->reloc_count;
9243 for (; rel < relend; rel++)
9245 enum elf_ppc64_reloc_type r_type;
9247 bfd_reloc_status_type r;
9248 Elf_Internal_Sym *sym;
9250 struct elf_link_hash_entry *h_elf;
9251 struct ppc_link_hash_entry *h;
9252 struct ppc_link_hash_entry *fdh;
9253 const char *sym_name;
9254 unsigned long r_symndx, toc_symndx;
9255 char tls_mask, tls_gd, tls_type;
9258 bfd_boolean unresolved_reloc;
9260 unsigned long insn, mask;
9261 struct ppc_stub_hash_entry *stub_entry;
9262 bfd_vma max_br_offset;
9265 r_type = ELF64_R_TYPE (rel->r_info);
9266 r_symndx = ELF64_R_SYM (rel->r_info);
9268 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9269 symbol of the previous ADDR64 reloc. The symbol gives us the
9270 proper TOC base to use. */
9271 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9273 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9275 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9281 unresolved_reloc = FALSE;
9284 if (r_symndx < symtab_hdr->sh_info)
9286 /* It's a local symbol. */
9289 sym = local_syms + r_symndx;
9290 sec = local_sections[r_symndx];
9291 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
9292 sym_type = ELF64_ST_TYPE (sym->st_info);
9293 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9294 opd_adjust = get_opd_info (sec);
9295 if (opd_adjust != NULL)
9297 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9301 relocation += adjust;
9306 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9307 r_symndx, symtab_hdr, sym_hashes,
9308 h_elf, sec, relocation,
9309 unresolved_reloc, warned);
9310 sym_name = h_elf->root.root.string;
9311 sym_type = h_elf->type;
9313 h = (struct ppc_link_hash_entry *) h_elf;
9315 /* TLS optimizations. Replace instruction sequences and relocs
9316 based on information we collected in tls_optimize. We edit
9317 RELOCS so that --emit-relocs will output something sensible
9318 for the final instruction stream. */
9322 if (IS_PPC64_TLS_RELOC (r_type))
9325 tls_mask = h->tls_mask;
9326 else if (local_got_ents != NULL)
9329 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9330 tls_mask = lgot_masks[r_symndx];
9332 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9334 /* Check for toc tls entries. */
9337 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9342 tls_mask = *toc_tls;
9346 /* Check that tls relocs are used with tls syms, and non-tls
9347 relocs are used with non-tls syms. */
9349 && r_type != R_PPC64_NONE
9351 || h->elf.root.type == bfd_link_hash_defined
9352 || h->elf.root.type == bfd_link_hash_defweak)
9353 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9355 if (r_type == R_PPC64_TLS && tls_mask != 0)
9356 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9359 (*_bfd_error_handler)
9360 (sym_type == STT_TLS
9361 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9362 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9365 (long) rel->r_offset,
9366 ppc64_elf_howto_table[r_type]->name,
9370 /* Ensure reloc mapping code below stays sane. */
9371 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9372 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9373 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9374 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9375 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9376 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9377 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9378 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9379 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9380 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9389 case R_PPC64_TOC16_LO:
9390 case R_PPC64_TOC16_DS:
9391 case R_PPC64_TOC16_LO_DS:
9393 /* Check for toc tls entries. */
9397 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9404 tls_mask = *toc_tls;
9405 if (r_type == R_PPC64_TOC16_DS
9406 || r_type == R_PPC64_TOC16_LO_DS)
9409 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9414 /* If we found a GD reloc pair, then we might be
9415 doing a GD->IE transition. */
9418 tls_gd = TLS_TPRELGD;
9419 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9420 goto tls_get_addr_check;
9422 else if (retval == 3)
9424 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9425 goto tls_get_addr_check;
9432 case R_PPC64_GOT_TPREL16_DS:
9433 case R_PPC64_GOT_TPREL16_LO_DS:
9435 && (tls_mask & TLS_TPREL) == 0)
9438 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9440 insn |= 0x3c0d0000; /* addis 0,13,0 */
9441 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9442 r_type = R_PPC64_TPREL16_HA;
9443 if (toc_symndx != 0)
9445 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9446 /* We changed the symbol. Start over in order to
9447 get h, sym, sec etc. right. */
9452 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9458 && (tls_mask & TLS_TPREL) == 0)
9461 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9462 if ((insn & ((0x3f << 26) | (31 << 11)))
9463 == ((31 << 26) | (13 << 11)))
9464 rtra = insn & ((1 << 26) - (1 << 16));
9465 else if ((insn & ((0x3f << 26) | (31 << 16)))
9466 == ((31 << 26) | (13 << 16)))
9467 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9470 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9473 else if ((insn & (31 << 1)) == 23 << 1
9474 && ((insn & (31 << 6)) < 14 << 6
9475 || ((insn & (31 << 6)) >= 16 << 6
9476 && (insn & (31 << 6)) < 24 << 6)))
9477 /* load and store indexed -> dform. */
9478 insn = (32 | ((insn >> 6) & 31)) << 26;
9479 else if ((insn & (31 << 1)) == 21 << 1
9480 && (insn & (0x1a << 6)) == 0)
9481 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9482 insn = (((58 | ((insn >> 6) & 4)) << 26)
9483 | ((insn >> 6) & 1));
9484 else if ((insn & (31 << 1)) == 21 << 1
9485 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9487 insn = (58 << 26) | 2;
9491 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9492 /* Was PPC64_TLS which sits on insn boundary, now
9493 PPC64_TPREL16_LO which is at insn+2. */
9495 r_type = R_PPC64_TPREL16_LO;
9496 if (toc_symndx != 0)
9498 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9499 /* We changed the symbol. Start over in order to
9500 get h, sym, sec etc. right. */
9505 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9509 case R_PPC64_GOT_TLSGD16_HI:
9510 case R_PPC64_GOT_TLSGD16_HA:
9511 tls_gd = TLS_TPRELGD;
9512 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9516 case R_PPC64_GOT_TLSLD16_HI:
9517 case R_PPC64_GOT_TLSLD16_HA:
9518 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9521 if ((tls_mask & tls_gd) != 0)
9522 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9523 + R_PPC64_GOT_TPREL16_DS);
9526 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9528 r_type = R_PPC64_NONE;
9530 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9534 case R_PPC64_GOT_TLSGD16:
9535 case R_PPC64_GOT_TLSGD16_LO:
9536 tls_gd = TLS_TPRELGD;
9537 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9538 goto tls_get_addr_check;
9541 case R_PPC64_GOT_TLSLD16:
9542 case R_PPC64_GOT_TLSLD16_LO:
9543 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9546 if (rel + 1 < relend)
9548 enum elf_ppc64_reloc_type r_type2;
9549 unsigned long r_symndx2;
9550 struct elf_link_hash_entry *h2;
9551 bfd_vma insn1, insn2, insn3;
9554 /* The next instruction should be a call to
9555 __tls_get_addr. Peek at the reloc to be sure. */
9556 r_type2 = ELF64_R_TYPE (rel[1].r_info);
9557 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9558 if (r_symndx2 < symtab_hdr->sh_info
9559 || (r_type2 != R_PPC64_REL14
9560 && r_type2 != R_PPC64_REL14_BRTAKEN
9561 && r_type2 != R_PPC64_REL14_BRNTAKEN
9562 && r_type2 != R_PPC64_REL24))
9565 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9566 while (h2->root.type == bfd_link_hash_indirect
9567 || h2->root.type == bfd_link_hash_warning)
9568 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
9569 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9570 && h2 != &htab->tls_get_addr_fd->elf))
9573 /* OK, it checks out. Replace the call. */
9574 offset = rel[1].r_offset;
9575 insn1 = bfd_get_32 (output_bfd,
9576 contents + rel->r_offset - 2);
9577 insn3 = bfd_get_32 (output_bfd,
9578 contents + offset + 4);
9579 if ((tls_mask & tls_gd) != 0)
9582 insn1 &= (1 << 26) - (1 << 2);
9583 insn1 |= 58 << 26; /* ld */
9584 insn2 = 0x7c636a14; /* add 3,3,13 */
9585 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9586 if ((tls_mask & TLS_EXPLICIT) == 0)
9587 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9588 + R_PPC64_GOT_TPREL16_DS);
9590 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9591 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9596 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9597 insn2 = 0x38630000; /* addi 3,3,0 */
9600 /* Was an LD reloc. */
9602 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9603 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9605 else if (toc_symndx != 0)
9606 r_symndx = toc_symndx;
9607 r_type = R_PPC64_TPREL16_HA;
9608 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9609 rel[1].r_info = ELF64_R_INFO (r_symndx,
9610 R_PPC64_TPREL16_LO);
9611 rel[1].r_offset += 2;
9614 || insn3 == CROR_151515 || insn3 == CROR_313131)
9618 rel[1].r_offset += 4;
9620 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9621 bfd_put_32 (output_bfd, insn2, contents + offset);
9622 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
9623 if (tls_gd == 0 || toc_symndx != 0)
9625 /* We changed the symbol. Start over in order
9626 to get h, sym, sec etc. right. */
9634 case R_PPC64_DTPMOD64:
9635 if (rel + 1 < relend
9636 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9637 && rel[1].r_offset == rel->r_offset + 8)
9639 if ((tls_mask & TLS_GD) == 0)
9641 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9642 if ((tls_mask & TLS_TPRELGD) != 0)
9643 r_type = R_PPC64_TPREL64;
9646 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9647 r_type = R_PPC64_NONE;
9649 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9654 if ((tls_mask & TLS_LD) == 0)
9656 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9657 r_type = R_PPC64_NONE;
9658 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9663 case R_PPC64_TPREL64:
9664 if ((tls_mask & TLS_TPREL) == 0)
9666 r_type = R_PPC64_NONE;
9667 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9672 /* Handle other relocations that tweak non-addend part of insn. */
9674 max_br_offset = 1 << 25;
9675 addend = rel->r_addend;
9681 /* Branch taken prediction relocations. */
9682 case R_PPC64_ADDR14_BRTAKEN:
9683 case R_PPC64_REL14_BRTAKEN:
9684 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9687 /* Branch not taken prediction relocations. */
9688 case R_PPC64_ADDR14_BRNTAKEN:
9689 case R_PPC64_REL14_BRNTAKEN:
9690 insn |= bfd_get_32 (output_bfd,
9691 contents + rel->r_offset) & ~(0x01 << 21);
9695 max_br_offset = 1 << 15;
9699 /* Calls to functions with a different TOC, such as calls to
9700 shared objects, need to alter the TOC pointer. This is
9701 done using a linkage stub. A REL24 branching to these
9702 linkage stubs needs to be followed by a nop, as the nop
9703 will be replaced with an instruction to restore the TOC
9708 && (((fdh = h->oh) != NULL
9709 && fdh->elf.plt.plist != NULL)
9710 || (fdh = h)->elf.plt.plist != NULL))
9712 && sec->output_section != NULL
9713 && sec->id <= htab->top_id
9714 && (htab->stub_group[sec->id].toc_off
9715 != htab->stub_group[input_section->id].toc_off)))
9716 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9718 && (stub_entry->stub_type == ppc_stub_plt_call
9719 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9720 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9722 bfd_boolean can_plt_call = FALSE;
9724 if (rel->r_offset + 8 <= input_section->size)
9727 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9729 || nop == CROR_151515 || nop == CROR_313131)
9731 bfd_put_32 (input_bfd, LD_R2_40R1,
9732 contents + rel->r_offset + 4);
9733 can_plt_call = TRUE;
9739 if (stub_entry->stub_type == ppc_stub_plt_call)
9741 /* If this is a plain branch rather than a branch
9742 and link, don't require a nop. */
9744 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9746 can_plt_call = TRUE;
9749 && strcmp (h->elf.root.root.string,
9750 ".__libc_start_main") == 0)
9752 /* Allow crt1 branch to go via a toc adjusting stub. */
9753 can_plt_call = TRUE;
9757 if (strcmp (input_section->output_section->name,
9759 || strcmp (input_section->output_section->name,
9761 (*_bfd_error_handler)
9762 (_("%B(%A+0x%lx): automatic multiple TOCs "
9763 "not supported using your crt files; "
9764 "recompile with -mminimal-toc or upgrade gcc"),
9767 (long) rel->r_offset);
9769 (*_bfd_error_handler)
9770 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9771 "does not allow automatic multiple TOCs; "
9772 "recompile with -mminimal-toc or "
9773 "-fno-optimize-sibling-calls, "
9774 "or make `%s' extern"),
9777 (long) rel->r_offset,
9780 bfd_set_error (bfd_error_bad_value);
9786 && stub_entry->stub_type == ppc_stub_plt_call)
9787 unresolved_reloc = FALSE;
9790 if (stub_entry == NULL
9791 && get_opd_info (sec) != NULL)
9793 /* The branch destination is the value of the opd entry. */
9794 bfd_vma off = (relocation - sec->output_section->vma
9795 - sec->output_offset + rel->r_addend);
9796 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9797 if (dest != (bfd_vma) -1)
9804 /* If the branch is out of reach we ought to have a long
9806 from = (rel->r_offset
9807 + input_section->output_offset
9808 + input_section->output_section->vma);
9810 if (stub_entry == NULL
9811 && (relocation + rel->r_addend - from + max_br_offset
9812 >= 2 * max_br_offset)
9813 && r_type != R_PPC64_ADDR14_BRTAKEN
9814 && r_type != R_PPC64_ADDR14_BRNTAKEN)
9815 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9818 if (stub_entry != NULL)
9820 /* Munge up the value and addend so that we call the stub
9821 rather than the procedure directly. */
9822 relocation = (stub_entry->stub_offset
9823 + stub_entry->stub_sec->output_offset
9824 + stub_entry->stub_sec->output_section->vma);
9832 /* Set 'a' bit. This is 0b00010 in BO field for branch
9833 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9834 for branch on CTR insns (BO == 1a00t or 1a01t). */
9835 if ((insn & (0x14 << 21)) == (0x04 << 21))
9837 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9844 /* Invert 'y' bit if not the default. */
9845 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9849 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9852 /* NOP out calls to undefined weak functions.
9853 We can thus call a weak function without first
9854 checking whether the function is defined. */
9856 && h->elf.root.type == bfd_link_hash_undefweak
9857 && r_type == R_PPC64_REL24
9859 && rel->r_addend == 0)
9861 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9872 (*_bfd_error_handler)
9873 (_("%B: unknown relocation type %d for symbol %s"),
9874 input_bfd, (int) r_type, sym_name);
9876 bfd_set_error (bfd_error_bad_value);
9882 case R_PPC64_GNU_VTINHERIT:
9883 case R_PPC64_GNU_VTENTRY:
9886 /* GOT16 relocations. Like an ADDR16 using the symbol's
9887 address in the GOT as relocation value instead of the
9888 symbol's value itself. Also, create a GOT entry for the
9889 symbol and put the symbol value there. */
9890 case R_PPC64_GOT_TLSGD16:
9891 case R_PPC64_GOT_TLSGD16_LO:
9892 case R_PPC64_GOT_TLSGD16_HI:
9893 case R_PPC64_GOT_TLSGD16_HA:
9894 tls_type = TLS_TLS | TLS_GD;
9897 case R_PPC64_GOT_TLSLD16:
9898 case R_PPC64_GOT_TLSLD16_LO:
9899 case R_PPC64_GOT_TLSLD16_HI:
9900 case R_PPC64_GOT_TLSLD16_HA:
9901 tls_type = TLS_TLS | TLS_LD;
9904 case R_PPC64_GOT_TPREL16_DS:
9905 case R_PPC64_GOT_TPREL16_LO_DS:
9906 case R_PPC64_GOT_TPREL16_HI:
9907 case R_PPC64_GOT_TPREL16_HA:
9908 tls_type = TLS_TLS | TLS_TPREL;
9911 case R_PPC64_GOT_DTPREL16_DS:
9912 case R_PPC64_GOT_DTPREL16_LO_DS:
9913 case R_PPC64_GOT_DTPREL16_HI:
9914 case R_PPC64_GOT_DTPREL16_HA:
9915 tls_type = TLS_TLS | TLS_DTPREL;
9919 case R_PPC64_GOT16_LO:
9920 case R_PPC64_GOT16_HI:
9921 case R_PPC64_GOT16_HA:
9922 case R_PPC64_GOT16_DS:
9923 case R_PPC64_GOT16_LO_DS:
9926 /* Relocation is to the entry for this symbol in the global
9931 unsigned long indx = 0;
9933 if (tls_type == (TLS_TLS | TLS_LD)
9935 || !h->elf.def_dynamic))
9936 offp = &ppc64_tlsld_got (input_bfd)->offset;
9939 struct got_entry *ent;
9943 bfd_boolean dyn = htab->elf.dynamic_sections_created;
9944 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
9947 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
9948 /* This is actually a static link, or it is a
9949 -Bsymbolic link and the symbol is defined
9950 locally, or the symbol was forced to be local
9951 because of a version file. */
9955 indx = h->elf.dynindx;
9956 unresolved_reloc = FALSE;
9958 ent = h->elf.got.glist;
9962 if (local_got_ents == NULL)
9964 ent = local_got_ents[r_symndx];
9967 for (; ent != NULL; ent = ent->next)
9968 if (ent->addend == rel->r_addend
9969 && ent->owner == input_bfd
9970 && ent->tls_type == tls_type)
9974 offp = &ent->got.offset;
9977 got = ppc64_elf_tdata (input_bfd)->got;
9981 /* The offset must always be a multiple of 8. We use the
9982 least significant bit to record whether we have already
9983 processed this entry. */
9989 /* Generate relocs for the dynamic linker, except in
9990 the case of TLSLD where we'll use one entry per
9992 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
9995 if ((info->shared || indx != 0)
9997 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
9998 || h->elf.root.type != bfd_link_hash_undefweak))
10000 outrel.r_offset = (got->output_section->vma
10001 + got->output_offset
10003 outrel.r_addend = rel->r_addend;
10004 if (tls_type & (TLS_LD | TLS_GD))
10006 outrel.r_addend = 0;
10007 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10008 if (tls_type == (TLS_TLS | TLS_GD))
10010 loc = relgot->contents;
10011 loc += (relgot->reloc_count++
10012 * sizeof (Elf64_External_Rela));
10013 bfd_elf64_swap_reloca_out (output_bfd,
10015 outrel.r_offset += 8;
10016 outrel.r_addend = rel->r_addend;
10018 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10021 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10022 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10023 else if (tls_type == (TLS_TLS | TLS_TPREL))
10024 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10025 else if (indx == 0)
10027 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10029 /* Write the .got section contents for the sake
10031 loc = got->contents + off;
10032 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10036 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10038 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10040 outrel.r_addend += relocation;
10041 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10042 outrel.r_addend -= htab->elf.tls_sec->vma;
10044 loc = relgot->contents;
10045 loc += (relgot->reloc_count++
10046 * sizeof (Elf64_External_Rela));
10047 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10050 /* Init the .got section contents here if we're not
10051 emitting a reloc. */
10054 relocation += rel->r_addend;
10055 if (tls_type == (TLS_TLS | TLS_LD))
10057 else if (tls_type != 0)
10059 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10060 if (tls_type == (TLS_TLS | TLS_TPREL))
10061 relocation += DTP_OFFSET - TP_OFFSET;
10063 if (tls_type == (TLS_TLS | TLS_GD))
10065 bfd_put_64 (output_bfd, relocation,
10066 got->contents + off + 8);
10071 bfd_put_64 (output_bfd, relocation,
10072 got->contents + off);
10076 if (off >= (bfd_vma) -2)
10079 relocation = got->output_offset + off;
10081 /* TOC base (r2) is TOC start plus 0x8000. */
10082 addend = -TOC_BASE_OFF;
10086 case R_PPC64_PLT16_HA:
10087 case R_PPC64_PLT16_HI:
10088 case R_PPC64_PLT16_LO:
10089 case R_PPC64_PLT32:
10090 case R_PPC64_PLT64:
10091 /* Relocation is to the entry for this symbol in the
10092 procedure linkage table. */
10094 /* Resolve a PLT reloc against a local symbol directly,
10095 without using the procedure linkage table. */
10099 /* It's possible that we didn't make a PLT entry for this
10100 symbol. This happens when statically linking PIC code,
10101 or when using -Bsymbolic. Go find a match if there is a
10103 if (htab->plt != NULL)
10105 struct plt_entry *ent;
10106 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10107 if (ent->addend == rel->r_addend
10108 && ent->plt.offset != (bfd_vma) -1)
10110 relocation = (htab->plt->output_section->vma
10111 + htab->plt->output_offset
10112 + ent->plt.offset);
10113 unresolved_reloc = FALSE;
10119 /* Relocation value is TOC base. */
10120 relocation = TOCstart;
10122 relocation += htab->stub_group[input_section->id].toc_off;
10123 else if (unresolved_reloc)
10125 else if (sec != NULL && sec->id <= htab->top_id)
10126 relocation += htab->stub_group[sec->id].toc_off;
10128 unresolved_reloc = TRUE;
10131 /* TOC16 relocs. We want the offset relative to the TOC base,
10132 which is the address of the start of the TOC plus 0x8000.
10133 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10135 case R_PPC64_TOC16:
10136 case R_PPC64_TOC16_LO:
10137 case R_PPC64_TOC16_HI:
10138 case R_PPC64_TOC16_DS:
10139 case R_PPC64_TOC16_LO_DS:
10140 case R_PPC64_TOC16_HA:
10141 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10144 /* Relocate against the beginning of the section. */
10145 case R_PPC64_SECTOFF:
10146 case R_PPC64_SECTOFF_LO:
10147 case R_PPC64_SECTOFF_HI:
10148 case R_PPC64_SECTOFF_DS:
10149 case R_PPC64_SECTOFF_LO_DS:
10150 case R_PPC64_SECTOFF_HA:
10152 addend -= sec->output_section->vma;
10155 case R_PPC64_REL14:
10156 case R_PPC64_REL14_BRNTAKEN:
10157 case R_PPC64_REL14_BRTAKEN:
10158 case R_PPC64_REL24:
10161 case R_PPC64_TPREL16:
10162 case R_PPC64_TPREL16_LO:
10163 case R_PPC64_TPREL16_HI:
10164 case R_PPC64_TPREL16_HA:
10165 case R_PPC64_TPREL16_DS:
10166 case R_PPC64_TPREL16_LO_DS:
10167 case R_PPC64_TPREL16_HIGHER:
10168 case R_PPC64_TPREL16_HIGHERA:
10169 case R_PPC64_TPREL16_HIGHEST:
10170 case R_PPC64_TPREL16_HIGHESTA:
10171 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10173 /* The TPREL16 relocs shouldn't really be used in shared
10174 libs as they will result in DT_TEXTREL being set, but
10175 support them anyway. */
10179 case R_PPC64_DTPREL16:
10180 case R_PPC64_DTPREL16_LO:
10181 case R_PPC64_DTPREL16_HI:
10182 case R_PPC64_DTPREL16_HA:
10183 case R_PPC64_DTPREL16_DS:
10184 case R_PPC64_DTPREL16_LO_DS:
10185 case R_PPC64_DTPREL16_HIGHER:
10186 case R_PPC64_DTPREL16_HIGHERA:
10187 case R_PPC64_DTPREL16_HIGHEST:
10188 case R_PPC64_DTPREL16_HIGHESTA:
10189 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10192 case R_PPC64_DTPMOD64:
10197 case R_PPC64_TPREL64:
10198 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10201 case R_PPC64_DTPREL64:
10202 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10205 /* Relocations that may need to be propagated if this is a
10207 case R_PPC64_REL30:
10208 case R_PPC64_REL32:
10209 case R_PPC64_REL64:
10210 case R_PPC64_ADDR14:
10211 case R_PPC64_ADDR14_BRNTAKEN:
10212 case R_PPC64_ADDR14_BRTAKEN:
10213 case R_PPC64_ADDR16:
10214 case R_PPC64_ADDR16_DS:
10215 case R_PPC64_ADDR16_HA:
10216 case R_PPC64_ADDR16_HI:
10217 case R_PPC64_ADDR16_HIGHER:
10218 case R_PPC64_ADDR16_HIGHERA:
10219 case R_PPC64_ADDR16_HIGHEST:
10220 case R_PPC64_ADDR16_HIGHESTA:
10221 case R_PPC64_ADDR16_LO:
10222 case R_PPC64_ADDR16_LO_DS:
10223 case R_PPC64_ADDR24:
10224 case R_PPC64_ADDR32:
10225 case R_PPC64_ADDR64:
10226 case R_PPC64_UADDR16:
10227 case R_PPC64_UADDR32:
10228 case R_PPC64_UADDR64:
10229 /* r_symndx will be zero only for relocs against symbols
10230 from removed linkonce sections, or sections discarded by
10231 a linker script. */
10238 if ((input_section->flags & SEC_ALLOC) == 0)
10241 if (NO_OPD_RELOCS && is_opd)
10246 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10247 || h->elf.root.type != bfd_link_hash_undefweak)
10248 && (MUST_BE_DYN_RELOC (r_type)
10249 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10250 || (ELIMINATE_COPY_RELOCS
10253 && h->elf.dynindx != -1
10254 && !h->elf.non_got_ref
10255 && h->elf.def_dynamic
10256 && !h->elf.def_regular))
10258 Elf_Internal_Rela outrel;
10259 bfd_boolean skip, relocate;
10264 /* When generating a dynamic object, these relocations
10265 are copied into the output file to be resolved at run
10271 out_off = _bfd_elf_section_offset (output_bfd, info,
10272 input_section, rel->r_offset);
10273 if (out_off == (bfd_vma) -1)
10275 else if (out_off == (bfd_vma) -2)
10276 skip = TRUE, relocate = TRUE;
10277 out_off += (input_section->output_section->vma
10278 + input_section->output_offset);
10279 outrel.r_offset = out_off;
10280 outrel.r_addend = rel->r_addend;
10282 /* Optimize unaligned reloc use. */
10283 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10284 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10285 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10286 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10287 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10288 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10289 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10290 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10291 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10294 memset (&outrel, 0, sizeof outrel);
10295 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10297 && r_type != R_PPC64_TOC)
10298 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10301 /* This symbol is local, or marked to become local,
10302 or this is an opd section reloc which must point
10303 at a local function. */
10304 outrel.r_addend += relocation;
10305 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10307 if (is_opd && h != NULL)
10309 /* Lie about opd entries. This case occurs
10310 when building shared libraries and we
10311 reference a function in another shared
10312 lib. The same thing happens for a weak
10313 definition in an application that's
10314 overridden by a strong definition in a
10315 shared lib. (I believe this is a generic
10316 bug in binutils handling of weak syms.)
10317 In these cases we won't use the opd
10318 entry in this lib. */
10319 unresolved_reloc = FALSE;
10321 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10323 /* We need to relocate .opd contents for ld.so.
10324 Prelink also wants simple and consistent rules
10325 for relocs. This make all RELATIVE relocs have
10326 *r_offset equal to r_addend. */
10333 if (bfd_is_abs_section (sec))
10335 else if (sec == NULL || sec->owner == NULL)
10337 bfd_set_error (bfd_error_bad_value);
10344 osec = sec->output_section;
10345 indx = elf_section_data (osec)->dynindx;
10347 /* We are turning this relocation into one
10348 against a section symbol, so subtract out
10349 the output section's address but not the
10350 offset of the input section in the output
10352 outrel.r_addend -= osec->vma;
10355 outrel.r_info = ELF64_R_INFO (indx, r_type);
10359 sreloc = elf_section_data (input_section)->sreloc;
10360 if (sreloc == NULL)
10363 loc = sreloc->contents;
10364 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10365 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10367 /* If this reloc is against an external symbol, it will
10368 be computed at runtime, so there's no need to do
10369 anything now. However, for the sake of prelink ensure
10370 that the section contents are a known value. */
10373 unresolved_reloc = FALSE;
10374 /* The value chosen here is quite arbitrary as ld.so
10375 ignores section contents except for the special
10376 case of .opd where the contents might be accessed
10377 before relocation. Choose zero, as that won't
10378 cause reloc overflow. */
10381 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10382 to improve backward compatibility with older
10384 if (r_type == R_PPC64_ADDR64)
10385 addend = outrel.r_addend;
10386 /* Adjust pc_relative relocs to have zero in *r_offset. */
10387 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10388 addend = (input_section->output_section->vma
10389 + input_section->output_offset
10396 case R_PPC64_GLOB_DAT:
10397 case R_PPC64_JMP_SLOT:
10398 case R_PPC64_RELATIVE:
10399 /* We shouldn't ever see these dynamic relocs in relocatable
10401 /* Fall through. */
10403 case R_PPC64_PLTGOT16:
10404 case R_PPC64_PLTGOT16_DS:
10405 case R_PPC64_PLTGOT16_HA:
10406 case R_PPC64_PLTGOT16_HI:
10407 case R_PPC64_PLTGOT16_LO:
10408 case R_PPC64_PLTGOT16_LO_DS:
10409 case R_PPC64_PLTREL32:
10410 case R_PPC64_PLTREL64:
10411 /* These ones haven't been implemented yet. */
10413 (*_bfd_error_handler)
10414 (_("%B: relocation %s is not supported for symbol %s."),
10416 ppc64_elf_howto_table[r_type]->name, sym_name);
10418 bfd_set_error (bfd_error_invalid_operation);
10423 /* Do any further special processing. */
10429 case R_PPC64_ADDR16_HA:
10430 case R_PPC64_ADDR16_HIGHERA:
10431 case R_PPC64_ADDR16_HIGHESTA:
10432 case R_PPC64_GOT16_HA:
10433 case R_PPC64_PLTGOT16_HA:
10434 case R_PPC64_PLT16_HA:
10435 case R_PPC64_TOC16_HA:
10436 case R_PPC64_SECTOFF_HA:
10437 case R_PPC64_TPREL16_HA:
10438 case R_PPC64_DTPREL16_HA:
10439 case R_PPC64_GOT_TLSGD16_HA:
10440 case R_PPC64_GOT_TLSLD16_HA:
10441 case R_PPC64_GOT_TPREL16_HA:
10442 case R_PPC64_GOT_DTPREL16_HA:
10443 case R_PPC64_TPREL16_HIGHER:
10444 case R_PPC64_TPREL16_HIGHERA:
10445 case R_PPC64_TPREL16_HIGHEST:
10446 case R_PPC64_TPREL16_HIGHESTA:
10447 case R_PPC64_DTPREL16_HIGHER:
10448 case R_PPC64_DTPREL16_HIGHERA:
10449 case R_PPC64_DTPREL16_HIGHEST:
10450 case R_PPC64_DTPREL16_HIGHESTA:
10451 /* It's just possible that this symbol is a weak symbol
10452 that's not actually defined anywhere. In that case,
10453 'sec' would be NULL, and we should leave the symbol
10454 alone (it will be set to zero elsewhere in the link). */
10456 /* Add 0x10000 if sign bit in 0:15 is set.
10457 Bits 0:15 are not used. */
10461 case R_PPC64_ADDR16_DS:
10462 case R_PPC64_ADDR16_LO_DS:
10463 case R_PPC64_GOT16_DS:
10464 case R_PPC64_GOT16_LO_DS:
10465 case R_PPC64_PLT16_LO_DS:
10466 case R_PPC64_SECTOFF_DS:
10467 case R_PPC64_SECTOFF_LO_DS:
10468 case R_PPC64_TOC16_DS:
10469 case R_PPC64_TOC16_LO_DS:
10470 case R_PPC64_PLTGOT16_DS:
10471 case R_PPC64_PLTGOT16_LO_DS:
10472 case R_PPC64_GOT_TPREL16_DS:
10473 case R_PPC64_GOT_TPREL16_LO_DS:
10474 case R_PPC64_GOT_DTPREL16_DS:
10475 case R_PPC64_GOT_DTPREL16_LO_DS:
10476 case R_PPC64_TPREL16_DS:
10477 case R_PPC64_TPREL16_LO_DS:
10478 case R_PPC64_DTPREL16_DS:
10479 case R_PPC64_DTPREL16_LO_DS:
10480 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10482 /* If this reloc is against an lq insn, then the value must be
10483 a multiple of 16. This is somewhat of a hack, but the
10484 "correct" way to do this by defining _DQ forms of all the
10485 _DS relocs bloats all reloc switches in this file. It
10486 doesn't seem to make much sense to use any of these relocs
10487 in data, so testing the insn should be safe. */
10488 if ((insn & (0x3f << 26)) == (56u << 26))
10490 if (((relocation + addend) & mask) != 0)
10492 (*_bfd_error_handler)
10493 (_("%B: error: relocation %s not a multiple of %d"),
10495 ppc64_elf_howto_table[r_type]->name,
10497 bfd_set_error (bfd_error_bad_value);
10504 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10505 because such sections are not SEC_ALLOC and thus ld.so will
10506 not process them. */
10507 if (unresolved_reloc
10508 && !((input_section->flags & SEC_DEBUGGING) != 0
10509 && h->elf.def_dynamic))
10511 (*_bfd_error_handler)
10512 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10515 (long) rel->r_offset,
10516 ppc64_elf_howto_table[(int) r_type]->name,
10517 h->elf.root.root.string);
10521 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
10529 if (r != bfd_reloc_ok)
10531 if (sym_name == NULL)
10532 sym_name = "(null)";
10533 if (r == bfd_reloc_overflow)
10538 && h->elf.root.type == bfd_link_hash_undefweak
10539 && ppc64_elf_howto_table[r_type]->pc_relative)
10541 /* Assume this is a call protected by other code that
10542 detects the symbol is undefined. If this is the case,
10543 we can safely ignore the overflow. If not, the
10544 program is hosed anyway, and a little warning isn't
10550 if (!((*info->callbacks->reloc_overflow)
10551 (info, (h ? &h->elf.root : NULL), sym_name,
10552 ppc64_elf_howto_table[r_type]->name,
10553 rel->r_addend, input_bfd, input_section, rel->r_offset)))
10558 (*_bfd_error_handler)
10559 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10562 (long) rel->r_offset,
10563 ppc64_elf_howto_table[r_type]->name,
10571 /* If we're emitting relocations, then shortly after this function
10572 returns, reloc offsets and addends for this section will be
10573 adjusted. Worse, reloc symbol indices will be for the output
10574 file rather than the input. Save a copy of the relocs for
10575 opd_entry_value. */
10576 if (is_opd && info->emitrelocations)
10579 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10580 rel = bfd_alloc (input_bfd, amt);
10581 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10582 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10585 memcpy (rel, relocs, amt);
10590 /* Adjust the value of any local symbols in opd sections. */
10593 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10594 const char *name ATTRIBUTE_UNUSED,
10595 Elf_Internal_Sym *elfsym,
10596 asection *input_sec,
10597 struct elf_link_hash_entry *h)
10599 long *opd_adjust, adjust;
10605 opd_adjust = get_opd_info (input_sec);
10606 if (opd_adjust == NULL)
10609 value = elfsym->st_value - input_sec->output_offset;
10610 if (!info->relocatable)
10611 value -= input_sec->output_section->vma;
10613 adjust = opd_adjust[value / 8];
10615 elfsym->st_value = 0;
10617 elfsym->st_value += adjust;
10621 /* Finish up dynamic symbol handling. We set the contents of various
10622 dynamic sections here. */
10625 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10626 struct bfd_link_info *info,
10627 struct elf_link_hash_entry *h,
10628 Elf_Internal_Sym *sym)
10630 struct ppc_link_hash_table *htab;
10632 struct plt_entry *ent;
10633 Elf_Internal_Rela rela;
10636 htab = ppc_hash_table (info);
10637 dynobj = htab->elf.dynobj;
10639 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10640 if (ent->plt.offset != (bfd_vma) -1)
10642 /* This symbol has an entry in the procedure linkage
10643 table. Set it up. */
10645 if (htab->plt == NULL
10646 || htab->relplt == NULL
10647 || htab->glink == NULL)
10650 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10651 fill in the PLT entry. */
10652 rela.r_offset = (htab->plt->output_section->vma
10653 + htab->plt->output_offset
10654 + ent->plt.offset);
10655 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10656 rela.r_addend = ent->addend;
10658 loc = htab->relplt->contents;
10659 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10660 * sizeof (Elf64_External_Rela));
10661 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10666 Elf_Internal_Rela rela;
10669 /* This symbol needs a copy reloc. Set it up. */
10671 if (h->dynindx == -1
10672 || (h->root.type != bfd_link_hash_defined
10673 && h->root.type != bfd_link_hash_defweak)
10674 || htab->relbss == NULL)
10677 rela.r_offset = (h->root.u.def.value
10678 + h->root.u.def.section->output_section->vma
10679 + h->root.u.def.section->output_offset);
10680 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10682 loc = htab->relbss->contents;
10683 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
10684 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10687 /* Mark some specially defined symbols as absolute. */
10688 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10689 sym->st_shndx = SHN_ABS;
10694 /* Used to decide how to sort relocs in an optimal manner for the
10695 dynamic linker, before writing them out. */
10697 static enum elf_reloc_type_class
10698 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
10700 enum elf_ppc64_reloc_type r_type;
10702 r_type = ELF64_R_TYPE (rela->r_info);
10705 case R_PPC64_RELATIVE:
10706 return reloc_class_relative;
10707 case R_PPC64_JMP_SLOT:
10708 return reloc_class_plt;
10710 return reloc_class_copy;
10712 return reloc_class_normal;
10716 /* Finish up the dynamic sections. */
10719 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10720 struct bfd_link_info *info)
10722 struct ppc_link_hash_table *htab;
10726 htab = ppc_hash_table (info);
10727 dynobj = htab->elf.dynobj;
10728 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10730 if (htab->elf.dynamic_sections_created)
10732 Elf64_External_Dyn *dyncon, *dynconend;
10734 if (sdyn == NULL || htab->got == NULL)
10737 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10738 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10739 for (; dyncon < dynconend; dyncon++)
10741 Elf_Internal_Dyn dyn;
10744 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10751 case DT_PPC64_GLINK:
10753 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10754 /* We stupidly defined DT_PPC64_GLINK to be the start
10755 of glink rather than the first entry point, which is
10756 what ld.so needs, and now have a bigger stub to
10757 support automatic multiple TOCs. */
10758 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
10762 s = bfd_get_section_by_name (output_bfd, ".opd");
10765 dyn.d_un.d_ptr = s->vma;
10768 case DT_PPC64_OPDSZ:
10769 s = bfd_get_section_by_name (output_bfd, ".opd");
10772 dyn.d_un.d_val = s->size;
10777 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10782 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10786 dyn.d_un.d_val = htab->relplt->size;
10790 /* Don't count procedure linkage table relocs in the
10791 overall reloc count. */
10795 dyn.d_un.d_val -= s->size;
10799 /* We may not be using the standard ELF linker script.
10800 If .rela.plt is the first .rela section, we adjust
10801 DT_RELA to not include it. */
10805 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10807 dyn.d_un.d_ptr += s->size;
10811 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
10815 if (htab->got != NULL && htab->got->size != 0)
10817 /* Fill in the first entry in the global offset table.
10818 We use it to hold the link-time TOCbase. */
10819 bfd_put_64 (output_bfd,
10820 elf_gp (output_bfd) + TOC_BASE_OFF,
10821 htab->got->contents);
10823 /* Set .got entry size. */
10824 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
10827 if (htab->plt != NULL && htab->plt->size != 0)
10829 /* Set .plt entry size. */
10830 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
10834 /* We need to handle writing out multiple GOT sections ourselves,
10835 since we didn't add them to DYNOBJ. We know dynobj is the first
10837 while ((dynobj = dynobj->link_next) != NULL)
10841 if (!is_ppc64_elf_target (dynobj->xvec))
10844 s = ppc64_elf_tdata (dynobj)->got;
10847 && s->output_section != bfd_abs_section_ptr
10848 && !bfd_set_section_contents (output_bfd, s->output_section,
10849 s->contents, s->output_offset,
10852 s = ppc64_elf_tdata (dynobj)->relgot;
10855 && s->output_section != bfd_abs_section_ptr
10856 && !bfd_set_section_contents (output_bfd, s->output_section,
10857 s->contents, s->output_offset,
10865 #include "elf64-target.h"